What are the main components of an ecosystem?
Producers, consumers, and decomposers.
What is energy flow in an ecosystem?
The transfer of energy through food chains and food webs from producers to consumers and decomposers.
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p.1
Introduction to Ecosystems

What are the main components of an ecosystem?

Producers, consumers, and decomposers.

p.1
Energy Flow and Ecological Pyramids

What is energy flow in an ecosystem?

The transfer of energy through food chains and food webs from producers to consumers and decomposers.

p.1
Ecological Succession

What is ecological succession?

The process of change in the species structure of an ecological community over time.

p.1
Energy Flow and Ecological Pyramids

What are food chains?

Linear sequences of organisms through which nutrients and energy pass as one organism eats another.

p.1
Energy Flow and Ecological Pyramids

What are food webs?

Complex networks of feeding relationships among various organisms in an ecosystem.

p.1
Energy Flow and Ecological Pyramids

What are ecological pyramids?

Graphical representations showing the distribution of biomass, energy, or numbers of organisms at each trophic level.

p.1
Types of Ecosystems

What are the types of ecosystems mentioned?

Forest, grassland, desert, and aquatic ecosystems.

p.1
Biodiversity and Conservation

What is biodiversity?

The variety of life in the world or in a particular habitat or ecosystem.

p.1
Biodiversity and Conservation

Why is biodiversity conservation important?

It helps maintain ecosystem stability, resilience, and the provision of ecosystem services.

p.1
Introduction to Ecosystems

What is the concept of an ecosystem?

An ecosystem is a community of living organisms and their physical environment interacting as a system.

p.29
Types of Ecosystems

What are Fringing Reefs?

Reefs attached to the margins of continents, forming in areas with low rainfall runoff.

p.13
Energy Flow and Ecological Pyramids

What does Lindeman's Law (10% Law) state?

When energy is transported from one trophic level to another, 90% is used in metabolic processes, and only 10% is transferred.

p.11
Introduction to Ecosystems

How does the double channel model relate to the structure of ecosystems?

It conforms to the basic stratified structure of ecosystems.

p.47
Biodiversity Conservation Methods

What is the primary objective of a National Park?

Conservation of species of a habitat with minimal or very low intensity of human activity.

p.9
Energy Flow and Ecological Pyramids

What is the Single Channel model in energy flow?

It describes the unidirectional flow of energy from producers to herbivores and carnivores.

p.27
Types of Ecosystems

What are marshes primarily characterized by?

Shallow water that is mostly grassland.

p.39
Biodiversity and Conservation

What type of measure is Alpha Diversity?

A local measure.

p.9
Energy Flow and Ecological Pyramids

What would happen if the primary source of energy in an ecosystem were cut off?

The entire system would collapse.

p.34
Ecological Succession

What initiates ecological succession?

Formation of a new, unoccupied habitat or disturbance of an existing community.

p.20
Nutrient Cycling

What role do microorganisms play in the sulfur cycle?

They help in the conversion of sulfur compounds into forms usable by plants and animals.

p.44
Biodiversity Conservation Methods

What does IUCN stand for?

International Union for Conservation of Nature.

p.20
Nutrient Cycling

What is acid rain and how is it related to the sulfur cycle?

Acid rain is precipitation that contains sulfuric acid, formed when sulfur dioxide in the atmosphere reacts with water vapor.

p.48
Ecological Succession

What are the four zones of a Biosphere Reserve?

Core, Buffer, Restoration, Transition.

p.12
Energy Flow and Ecological Pyramids

What are the three types of Eltonoian Pyramids?

1. Pyramid of energy 2. Pyramid of number 3. Pyramid of biomass (productivity)

p.28
Energy Flow and Ecological Pyramids

What do shallow water corals feed on?

Zooxanthellae (algae).

p.26
Types of Ecosystems

What is a wetland?

An area of marsh, fen, peatland, or water, natural or artificial, with water that can be static, flowing, fresh, brackish, or salt.

p.35
Ecological Succession

What occurs during the Invasion stage of succession?

Arrival of propagules and establishment and initial growth of vegetation.

p.44
Threats to Biodiversity

What does it mean for a species to be Extinct in the Wild?

Species survive only in captivity.

p.8
Energy Flow and Ecological Pyramids

What is the NPP of the Earth?

320 dry g calories/m²/year.

p.17
Nutrient Cycling

What is the carbon cycle?

The process by which carbon is exchanged among the biosphere, geosphere, hydrosphere, and atmosphere.

p.48
Biodiversity Conservation Methods

What is the main objective of a Biosphere Reserve?

Conservation of natural resources and improvement of the relationship between humans and the environment.

p.42
Biodiversity and Conservation

What is required for an area to qualify as a biodiversity hotspot?

It must have at least 1,500 vascular plants as endemics.

p.24
Biodiversity and Conservation

What role do wetlands/salt marshes play in marine ecosystems?

They act as buffers against storms, filter pollutants, and provide habitat for wildlife.

p.46
Biodiversity Conservation Methods

What is promoted through in-situ conservation?

Sustainable management.

p.42
Biodiversity and Conservation

What percentage of original natural vegetation must remain for an area to be considered a biodiversity hotspot?

30% or less.

p.44
Threats to Biodiversity

What defines a species as Extinct?

The last individual has died or is nontrackable.

p.4
Public Awareness and Climate Change

What do communities need to do to increase their resilience to climate change?

They need to adapt to the changes.

p.6
Ecological Principles

What does the first law of thermodynamics state?

The law of conservation of energy.

p.38
Types of Ecosystems

How does the structure of ecosystems differ?

For example, tropical south India has rich species diversity compared to desert ecosystems.

p.28
Types of Ecosystems

What is the temperature range for coral survival?

20 - 21 degrees Celsius.

p.12
Energy Flow and Ecological Pyramids

What does the Pyramid of biomass represent?

The total mass of living organisms at each trophic level.

p.45
Biodiversity Conservation Methods

What is an example of an ex-situ conservation method?

Zoological Garden.

p.11
Introduction to Ecosystems

What does the double channel or Y-shape model represent in ecosystems?

It represents a common boundary for light and heat flow, as well as the import, export, and storage of organic matter.

p.11
Energy Flow and Ecological Pyramids

What two food chains does the double channel model separate?

The grazing and detritus food chains.

p.39
Biodiversity and Conservation

What does Alpha Diversity measure?

The average species diversity in a habitat or specific area.

p.47
Biodiversity Conservation Methods

What activities are prohibited in a National Park?

Forestry, poaching, hunting, and grazing on cultivation.

p.36
Introduction to Ecosystems

What is the depth range of the Abyssal Zone?

Typically found at depths greater than 2000 meters.

p.44
Biodiversity Conservation Methods

What is the purpose of the Red Data List?

To assess the conservation status of species.

p.8
Energy Flow and Ecological Pyramids

What is productivity in ecological terms?

The rate of formation of energy and matter stored in different species at different trophic levels.

p.2
Introduction to Ecosystems

Which sciences are included in the multidisciplinary nature of environmental studies?

Social Sciences, Life Sciences, Earth Sciences.

p.21
Types of Ecosystems

What are the two main types of ecosystems?

Terrestrial and Aquatic.

p.27
Types of Ecosystems

What type of water is found in estuaries?

Brackish water.

p.23
Types of Ecosystems

What characterizes an oligotrophic lake?

It is less productive, usually deep with steep sides and a narrow littoral zone.

p.46
Biodiversity Conservation Methods

What is created to facilitate wildlife movement in in-situ conservation?

Natural corridors.

p.8
Energy Flow and Ecological Pyramids

What is secondary productivity?

The rate at which energy is stored at different levels in consumers.

p.21
Types of Ecosystems

What type of ecosystem is characterized by low rainfall and extreme temperatures?

Desert ecosystem.

p.21
Types of Ecosystems

Which ecosystem is primarily composed of grasses?

Grassland ecosystem.

p.36
Nutrient Cycling

How do material and energy flow in these ecosystems?

Through processes like photosynthesis, nutrient cycling, and food webs.

p.50
Biodiversity Conservation Methods

What was the duration of the National Wildlife Action Plan?

2002 - 2016.

p.20
Nutrient Cycling

What is the sulfur cycle?

The process by which sulfur moves through the environment, including the atmosphere, lithosphere, hydrosphere, and biosphere.

p.20
Nutrient Cycling

What are the main sources of sulfur in the environment?

Volcanic eruptions, fossil fuel combustion, and the weathering of sulfur-containing minerals.

p.11
Energy Flow and Ecological Pyramids

In what ways does the double channel model separate the food chains?

In both time and space.

p.14
Energy Flow and Ecological Pyramids

Which trophic level typically has the most individuals?

Producers.

p.42
Biodiversity and Conservation

What defines areas that support natural ecosystems largely intact?

They are areas where native species and communities associated with the ecosystem are well represented.

p.38
Biodiversity and Conservation

What is species diversity?

A measure of the diversity within an ecological community.

p.41
Biodiversity and Conservation

What is a biodiversity hotspot?

A region with significant levels of biodiversity that is under threat from human activities.

p.42
Biodiversity and Conservation

What does it mean for a biodiversity hotspot to be irreplaceable?

It contains a high percentage of plant life found nowhere else on the planet.

p.20
Nutrient Cycling

What are the environmental impacts of the sulfur cycle?

It can lead to acid rain, which harms ecosystems, and contributes to air pollution.

p.45
Biodiversity Conservation Methods

What is one method of biodiversity conservation that involves preserving genetic material?

Gene Bank.

p.6
Ecological Principles

What do limiting factors determine?

The productivity of organisms, populations, or communities.

p.36
Introduction to Ecosystems

What is the significance of the Dysphotic Zone?

A zone where light is insufficient for photosynthesis, typically found below the Euphotic Zone.

p.7
Energy Flow and Ecological Pyramids

What is one key difference between a food chain and a food web?

A food chain shows a linear sequence of energy transfer, while a food web shows interconnected relationships.

p.15
Energy Flow and Ecological Pyramids

How does the pyramid of energy biomass and productivity apply to a pond ecosystem?

It reflects the distribution and amount of energy among different trophic levels in the pond.

p.45
Biodiversity Conservation Methods

What is the purpose of a Botanical Garden?

To conserve plant species and educate the public.

p.3
Public Awareness and Climate Change

What is a major global environmental problem related to population?

Overpopulation.

p.44
Threats to Biodiversity

What is the population decline percentage for an Endangered species?

50-70% in a decade.

p.4
Public Awareness and Climate Change

What is a driver for effective government policies related to climate change?

Public awareness and engagement.

p.29
Types of Ecosystems

What is an Atoll?

A ring-shaped island made up of coral reefs and coral debris.

p.25
Types of Ecosystems

What are the depth-based zones in the Pelagic environment?

Epipelagic, Mesopelagic, Bathypelagic, Abyssopelagic.

p.39
Biodiversity and Conservation

What does Beta Diversity refer to?

The ratio between local (alpha) diversity and regional diversity.

p.2
Introduction to Ecosystems

What does the term 'multidisciplinary nature' refer to?

Interactions between physical, chemical, and biological systems.

p.47
Biodiversity Conservation Methods

What types of activities are allowed in a Wildlife Sanctuary?

Harvesting of timber, collecting minor forest products, and private ownership rights.

p.41
Biodiversity and Conservation

Why are biodiversity hotspots important?

They are crucial for conservation efforts as they contain a large number of endemic species and are highly threatened.

p.47
Biodiversity Conservation Methods

How are the boundaries of Wildlife Sanctuaries defined?

Boundaries are not well defined, and controlled biotic interference is permitted.

p.41
Biodiversity and Conservation

Can you name a well-known biodiversity hotspot?

The Amazon rainforest.

p.10
Energy Flow and Ecological Pyramids

What is a single channel model in communication systems?

A model that represents the transmission of information through a single pathway or channel.

p.22
Types of Ecosystems

What is the euphotic zone?

A zone with sufficient light for photosynthesis.

p.6
Ecological Principles

What does the second law of thermodynamics describe?

Disorder is constantly increasing, and energy is converted into a less organized and useful form during energy conversion.

p.23
Types of Ecosystems

What is a key feature of eutrophic lakes?

They are highly productive and rich in organic matter and nutrients.

p.32
Types of Ecosystems

In which regions do grasslands occur?

Both tropical and temperate regions where rainfall is insufficient for tree growth.

p.18
Nutrient Cycling

What role do nitrifying bacteria play in the nitrogen cycle?

They convert ammonia into nitrites (NO2-) and then into nitrates (NO3-).

p.17
Nutrient Cycling

How does photosynthesis contribute to the carbon cycle?

Plants absorb carbon dioxide from the atmosphere and convert it into organic matter.

p.16
Nutrient Cycling

What are the two main types of nutrient cycling?

Terrestrial (e.g., nitrogen cycle) and aquatic (e.g., carbon cycle).

p.52
Biodiversity Conservation Methods

What is the purpose of the Wildlife Protection Act, 1972?

To protect wildlife and their habitats in India.

p.16
Nutrient Cycling

What processes are included in the biological cycle of nutrient cycling?

Respiration, assimilation, excretion, decomposition, and photosynthesis.

p.22
Types of Ecosystems

What is the limnetic zone?

A well-lit zone in open sea with running water, home to zooplanktons and nektons.

p.2
Introduction to Ecosystems

What is the purpose of GIS in environmental studies?

To analyze spatial data related to the environment.

p.21
Types of Ecosystems

Which aquatic ecosystem is the largest on Earth?

Oceans.

p.14
Energy Flow and Ecological Pyramids

What does a pyramid of numbers indicate?

The number of individuals in each trophic level.

p.47
Biodiversity Conservation Methods

Who can reside in a National Park?

No person resides in the park other than public servants on duty and persons permitted by the chief wildlife warden.

p.20
Nutrient Cycling

How does sulfur enter the atmosphere?

Through volcanic eruptions and human activities like burning fossil fuels.

p.14
Energy Flow and Ecological Pyramids

What is an inverted pyramid of numbers?

A situation where a higher trophic level has a larger standing crop than a lower trophic level.

p.28
Types of Ecosystems

What is a coral reef?

A diverse underwater ecosystem held by calcium carbonate secreted by corals.

p.14
Energy Flow and Ecological Pyramids

Give an example of organisms in the pyramid of numbers.

Birds (carnivores), insects (herbivores), trees (producers).

p.28
Types of Ecosystems

What is an individual coral called?

A polyp.

p.14
Energy Flow and Ecological Pyramids

What limitation does the pyramid of numbers have?

It does not provide a true picture of the food chain and is not very functional.

p.35
Ecological Succession

What is the first stage of ecological succession?

Nudation, which involves the development of a bare site.

p.7
Energy Flow and Ecological Pyramids

What is a food web?

A graphical description of interconnected feeding relationships among species in a community.

p.38
Types of Ecosystems

What does ecosystem diversity refer to?

The presence of different types of ecosystems.

p.46
Biodiversity Conservation Methods

How does in-situ conservation integrate biodiversity?

By integrating conservation and biodiversity.

p.47
Biodiversity Conservation Methods

Who can reside in a Wildlife Sanctuary?

No person resides in the park other than public servants on duty and persons permitted by the chief wildlife warden.

p.41
Biodiversity and Conservation

What role do biodiversity hotspots play in ecological balance?

They support various ecosystems, contribute to climate regulation, and provide resources for human survival.

p.26
Biodiversity and Conservation

What is one function of wetlands related to biodiversity?

Wetlands support a diverse range of plant and animal species.

p.4
Public Awareness and Climate Change

What empowers communities to take action against climate change?

Knowledge about risks and response options.

p.38
Biodiversity and Conservation

What are some examples of ecological processes related to functional diversity?

Competition, predation, and parasitism.

p.21
Types of Ecosystems

What type of aquatic ecosystem includes ponds and lakes?

Lentic ecosystems.

p.21
Types of Ecosystems

What is a lotic ecosystem?

An ecosystem that includes flowing water, such as rivers.

p.44
Biodiversity Conservation Methods

What are the categories under Least Concern?

Data Deficient and Not Evaluated.

p.29
Types of Ecosystems

What distinguishes Barrier Reefs from other types of reefs?

They are separated from land by a lagoon and can form around islands or parallel to the continental shore.

p.9
Energy Flow and Ecological Pyramids

What happens to energy at each trophic level in an ecosystem?

There is a gradual loss of energy, resulting in less energy available at the next trophic level.

p.37
Biodiversity and Conservation

What is an advantage of genetic diversity?

It provides organisms and ecosystems with the capacity to recuperate after changes occur.

p.46
Biodiversity Conservation Methods

What is the aim of in-situ conservation?

To protect the total ecosystem.

p.24
Biodiversity and Conservation

What is the significance of coral reefs in marine ecosystems?

They provide habitat and shelter for many marine organisms and support biodiversity.

p.34
Ecological Succession

What is primary succession?

Succession that begins in areas where there is no soil initially.

p.38
Biodiversity and Conservation

What two components make up species diversity?

Species richness and species abundance.

p.7
Energy Flow and Ecological Pyramids

Which food chain is common to all ecosystems?

Detrital food chain.

p.36
Introduction to Ecosystems

What is the Euphotic Zone?

The upper layer of water where sunlight penetrates, supporting photosynthesis.

p.48
Biodiversity Conservation Methods

Who maintains jurisdiction over Biosphere Reserves?

National governments.

p.5
Introduction to Ecosystems

What are the levels of biological organization from individual to the biosphere?

Individual → Population → Ecosystem → Biome → Biosphere.

p.34
Ecological Succession

What are examples of disturbances that can initiate succession?

Fire and invasive species.

p.18
Nutrient Cycling

What are the main processes involved in the nitrogen cycle?

Nitrogen fixation, nitrification, assimilation, ammonification, and denitrification.

p.42
Biodiversity and Conservation

What are endemic species?

Species that are found nowhere else on the planet.

p.47
Biodiversity Conservation Methods

What authority can notify changes regarding Wildlife Sanctuaries?

The State Government may notify changes.

p.22
Types of Ecosystems

What characterizes the profundal zone?

Lack of sufficient sunlight and oxygen, mostly occupied by consumers.

p.26
Nutrient Cycling

How do wetlands contribute to groundwater?

They help in groundwater replenishment.

p.33
Types of Ecosystems

What are some biotic components found in ponds?

Algae, macrophytes (like Hydrilla, Trapha, Typha), rotifers, protozoans, zooplankton, insects, fish, game fish, turtles, bacteria, and fungi.

p.44
Threats to Biodiversity

What does Vulnerable mean in terms of species risk?

High risk of endangerment in the wild.

p.10
Energy Flow and Ecological Pyramids

Why is a single channel model important in communication?

It helps in understanding how information is transmitted and the effects of various factors on communication quality.

p.17
Nutrient Cycling

What role does respiration play in the carbon cycle?

Organisms release carbon dioxide back into the atmosphere as they break down organic matter for energy.

p.23
Types of Ecosystems

How does the productivity of mesotrophic lakes compare to oligotrophic and eutrophic lakes?

It is intermediate between the two.

p.13
Energy Flow and Ecological Pyramids

What shape is the pyramid of energy?

Always upright.

p.27
Types of Ecosystems

What type of vegetation is found in swamps?

Wooded shrubs rather than grass.

p.15
Energy Flow and Ecological Pyramids

What does a pyramid of standing crop/productivity indicate?

It indicates how much biomass is present in each trophic level at any one time.

p.34
Ecological Succession

What is secondary succession?

Succession that begins in areas where soil is already present.

p.15
Energy Flow and Ecological Pyramids

What are the three main trophic levels represented in a pyramid of productivity?

Producers, herbivores, and carnivores.

p.32
Types of Ecosystems

What characterizes tropical rain forests?

Densely packed tall trees that prevent the growth of smaller plants.

p.18
Nutrient Cycling

What is the nitrogen cycle?

The process through which nitrogen is converted between its various chemical forms in the environment.

p.45
Biodiversity Conservation Methods

What is a Seed Bank used for?

To preserve seeds for future use and biodiversity.

p.26
Types of Ecosystems

What is the maximum depth of marine water in wetlands according to the Ramsar Convention?

Less than 6 meters at low tide.

p.4
Public Awareness and Climate Change

What should communities be made aware of regarding climate change?

The risks and available options for response.

p.48
Biodiversity and Conservation

What should the core area of a Biosphere Reserve represent?

A typical biogeographical unit large enough to sustain viable populations of all trophic levels.

p.5
Introduction to Ecosystems

What are abiotic components of an ecosystem?

Climatic conditions (temperature, rainfall, sunlight, wind, atmospheric gases) and edaphic conditions (soil, pH, mineral nutrients).

p.28
Types of Ecosystems

What is the salinity range for coral survival?

27 - 30%.

p.10
Energy Flow and Ecological Pyramids

What is the role of noise in a single channel model?

Noise represents any interference that can distort the signal during transmission.

p.22
Types of Ecosystems

What is the benthic zone?

A zone with no sunlight and oxygen.

p.33
Ecological Succession

What ecological services do ponds provide?

Biodiversity, water filtration and purification, flood mitigation, groundwater recharge, moderating local temperatures and humidity levels.

p.2
Environmental Priorities in India

What does EIA stand for in environmental management?

Environmental Impact Assessment.

p.3
Public Awareness and Climate Change

What is meant by global change?

Significant alterations in climate, ecosystems, and human society.

p.3
Public Awareness and Climate Change

How does war contribute to environmental problems?

It leads to destruction and resource depletion.

p.26
Biodiversity and Conservation

In what way do wetlands mitigate climate change?

They help in retaining nutrients and carbon storage.

p.50
Biodiversity Conservation Methods

What is one significance of Eco-Sensitive Zones?

To minimize the impact of development activities.

p.51
Biodiversity Conservation Methods

What is one goal of CITES related to poaching?

To reduce the economic incentive to poach endangered species and destroy their habitat.

p.51
Biodiversity Conservation Methods

What does the Convention on the Conservation of Migratory Species of Wild Animals (CMS) focus on?

Conserving migratory species and their habitats.

p.37
Biodiversity and Conservation

What are the three levels of biodiversity mentioned?

Diversity within species, between species, and of ecosystems.

p.24
Types of Ecosystems

What is an estuary?

A coastal area where freshwater from rivers meets and mixes with saltwater from the ocean.

p.25
Types of Ecosystems

What are the nutrient-based zones in the Pelagic environment?

Neritic and Oceanic.

p.9
Energy Flow and Ecological Pyramids

What causes the progressive decrease in energy at each trophic level?

Loss of energy as heat and utilized energy.

p.45
Biodiversity Conservation Methods

What is the primary objective of biodiversity conservation?

To maintain essential ecological processes.

p.6
Ecological Principles

What is homeostasis?

The tendency of the body to seek and maintain balance within its internal environment despite external changes.

p.4
Public Awareness and Climate Change

Why is public awareness important in the context of climate change?

Communities are vulnerable to the impacts of climate change.

p.27
Types of Ecosystems

What defines an estuary?

Enclosed bodies where freshwater meets saltwater, characterized by high biodiversity.

p.8
Energy Flow and Ecological Pyramids

What is primary productivity?

The rate at which chemical energy is produced from solar energy, measured in dry weight (g calories/unit area/unit time).

p.48
Biodiversity Conservation Methods

What is a requirement for the core area of a Biosphere Reserve?

It must be effectively protected and minimally disturbed.

p.5
Introduction to Ecosystems

What are the biotic components of an ecosystem?

Producers, Consumers, Decomposers, Scavengers, Parasites, Phagotrophs, and Osmotrophs.

p.32
Types of Ecosystems

What dominates grasslands?

Grasses.

p.10
Energy Flow and Ecological Pyramids

What does the graphical representation of a single channel model typically include?

Elements such as the source, channel, noise, and receiver.

p.35
Ecological Succession

What is the Reaction phase in ecological succession?

A phase where autogenic changes affect the habitat, leading to the replacement of one plant community by another.

p.6
Energy Flow and Ecological Pyramids

How much energy is typically transferred along the food chain?

Less than 10%.

p.3
Public Awareness and Climate Change

What environmental issue involves harmful substances in the air, water, and soil?

Pollution.

p.6
Nutrient Cycling

What are energy cycling and nutrient cycling?

Activities of the biotic component of the ecosystem.

p.8
Energy Flow and Ecological Pyramids

What is net primary productivity?

The amount of energy that remains available for plant growth.

p.32
Types of Ecosystems

What types of animals are prominent in desert ecosystems?

Reptiles and burrowing rodent insects.

p.17
Nutrient Cycling

What is the impact of combustion on the carbon cycle?

Combustion releases stored carbon from fossil fuels into the atmosphere as carbon dioxide.

p.40
Biodiversity and Conservation

What is the ethical value of biodiversity?

The moral obligation on humans not to drive other species to extinction.

p.50
Biodiversity Conservation Methods

Can areas beyond 10 km also be notified as Eco-Sensitive Zones?

Yes, if they hold larger ecologically important sensitive corridors.

p.35
Ecological Succession

What characterizes Climax species in ecological succession?

They dominate the final stable community and are well adapted to the environment.

p.37
Biodiversity and Conservation

How does the Convention on Biological Diversity define biodiversity?

As variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems, and the ecological complexes they are part of.

p.25
Types of Ecosystems

What are the light-based zones in aquatic environments?

Photic, Euphotic, Disphotic, Aphotic.

p.24
Types of Ecosystems

What are the main components of a marine ecosystem?

Oceans, deep water, estuaries, coral reefs, and wetlands/salt marshes.

p.25
Types of Ecosystems

What are the distance-based zones in marine environments?

Intertidal Zone, Continental Shelf, Continental Slope, Continental Rise, Open Ocean (Pelagic), Basin (Abyssal).

p.34
Ecological Succession

What is ecological succession?

Directional and sequential change of a plant community or ecosystem over time, stabilizing to form a climax.

p.48
Types of Ecosystems

What types of ecosystems are found in a Biosphere Reserve?

Both natural and human-influenced ecosystems.

p.12
Energy Flow and Ecological Pyramids

What is an ecological pyramid?

A graphical representation of trophic levels.

p.39
Biodiversity and Conservation

What does Beta Diversity indicate?

The diversity of species between two habitats or regions.

p.24
Types of Ecosystems

What is the primary characteristic of deep water in marine ecosystems?

It is characterized by low light levels and high pressure, supporting unique organisms.

p.39
Biodiversity and Conservation

What is Gamma Diversity?

The total diversity of a landscape, combining both alpha and beta diversity.

p.42
Biodiversity and Conservation

What is a key characteristic of biodiversity hotspots?

They must be threatened.

p.2
Introduction to Ecosystems

Name three Earth Sciences involved in environmental studies.

Meteorology, Geology, Oceanography.

p.36
Types of Ecosystems

What are the characteristics of the Alpine Zone?

A high-altitude area characterized by cold temperatures and specific vegetation.

p.44
Threats to Biodiversity

What characterizes a Critically Endangered species?

High risk of extinction; population declined by 80-90% over the decade.

p.18
Nutrient Cycling

What is nitrogen fixation?

The process of converting atmospheric nitrogen (N2) into ammonia (NH3) by bacteria or lightning.

p.46
Biodiversity Conservation Methods

What does ex-situ conservation involve?

Relocating endangered species from their natural habitat.

p.8
Energy Flow and Ecological Pyramids

What is gross primary productivity?

The total amount of organic matter produced through photosynthesis.

p.45
Biodiversity Conservation Methods

What are National Parks designed for?

To protect wildlife and their habitats in situ.

p.3
Environmental Priorities in India

What does the depletion of resources refer to?

The exhaustion of natural resources.

p.6
Ecological Principles

Are the activities of the biotic component of the ecosystem constant?

No, they are not constant.

p.49
Biodiversity and Conservation

What is the primary function of the Core Zone in a biosphere reserve?

To serve as a habitat for numerous plant and animal species, including higher order predators, and may contain centers of endemism.

p.52
Biodiversity Conservation Methods

What does The Biodiversity Act, 2022 aim to achieve?

To promote the conservation of biological diversity in India.

p.16
Nutrient Cycling

What is a biogeochemical cycle?

A cycle that describes the movement of nutrients through biological and geological processes.

p.21
Types of Ecosystems

What type of ecosystem is characterized by brackish water where freshwater meets saltwater?

Estuaries.

p.31
Types of Ecosystems

What is the world's largest terrestrial ecosystem?

Taiga.

p.37
Biodiversity and Conservation

What does genetic diversity refer to?

The variation of genes within species, existing between different populations and individuals within a population.

p.13
Energy Flow and Ecological Pyramids

What is the term for the energy transferred from one trophic level to another?

Ecological efficiency.

p.13
Energy Flow and Ecological Pyramids

Which ecosystem has higher ecological efficiency, marine or terrestrial?

Marine ecosystems generally have higher ecological efficiency.

p.7
Energy Flow and Ecological Pyramids

What is a food chain?

A unidirectional transfer of energy through the community.

p.47
Biodiversity Conservation Methods

Who declares National Parks?

National Parks are declared by the Central Government resolution.

p.46
Biodiversity Conservation Methods

What does in-situ conservation involve creating?

Protected areas.

p.47
Biodiversity Conservation Methods

What is the primary objective of a Wildlife Sanctuary?

Conservation of species and habitats by manipulative management.

p.41
Biodiversity and Conservation

How many criteria must a region meet to be classified as a biodiversity hotspot?

Two criteria: it must have at least 1,500 species of vascular plants as endemics and it must have lost at least 70% of its original habitat.

p.5
Introduction to Ecosystems

What defines a self-contained system in an ecosystem?

Specific nutrients and energy flow.

p.46
Biodiversity Conservation Methods

What does in-situ conservation aim to protect and restore?

Degraded land.

p.12
Energy Flow and Ecological Pyramids

What does the Pyramid of energy represent?

The flow of energy through different trophic levels.

p.28
Biodiversity and Conservation

What role do Zooxanthellae play in coral reefs?

They provide colors to corals.

p.35
Ecological Succession

What happens during the Competition phase of succession?

Various species compete for space, light, and nutrients as vegetation becomes well established.

p.7
Energy Flow and Ecological Pyramids

Name the three primary categories in a food chain.

Primary Producers, Herbivores, Carnivores.

p.38
Biodiversity and Conservation

What is functional diversity?

The diversity of ecological processes that maintain and depend on other components of diversity.

p.48
Biodiversity Conservation Methods

Why is local community involvement important in Biosphere Reserves?

To link biodiversity conservation with socio-economic development.

p.36
Types of Ecosystems

What are Continental Shelves and Estuaries?

Coastal regions where land meets the ocean, rich in biodiversity and nutrients.

p.35
Ecological Succession

What are the three types of species involved in ecological succession?

Pioneer, Middle, and Climax species.

p.52
Biodiversity Conservation Methods

What is the focus of the National Tiger Conservation Act?

To ensure the conservation of tigers and their habitats.

p.35
Ecological Succession

What role do Middle species play in ecological succession?

They establish after Pioneer species and compete for resources, contributing to community complexity.

p.40
Biodiversity and Conservation

What types of diversity are included in the value of biodiversity?

Population, species, and ecosystem diversity.

p.52
Biodiversity Conservation Methods

What is Project Tiger?

A conservation program aimed at protecting tiger populations in India.

p.52
Biodiversity Conservation Methods

What is the aim of Project Snow Leopard?

To conserve snow leopards and their high-altitude habitats.

p.7
Energy Flow and Ecological Pyramids

What are the types of food chains?

Grazing food chain, Detrital food chain, Supplementary (Parasitic) food chain.

p.5
Introduction to Ecosystems

What is an ecosystem?

An interaction of a variety of individual organisms with each other and their physical environment.

p.27
Types of Ecosystems

How do bogs and fens differ from marshes and swamps?

They are freshwater wetlands formed by glacial lakes and have low nutrients.

p.38
Biodiversity and Conservation

Is species diversity evenly distributed across the globe?

No, it is not evenly distributed.

p.34
Ecological Succession

What is the end goal of ecological succession?

The formation of a stable community or climax.

p.15
Energy Flow and Ecological Pyramids

What do pyramids of numbers and productivity say about energy movement in an ecosystem?

They say little or nothing about the amount of energy moving through the ecosystem.

p.32
Types of Ecosystems

How does the temperature in tropical rain forests vary throughout the year?

It remains almost the same throughout the year.

p.12
Energy Flow and Ecological Pyramids

What does the Pyramid of number represent?

The number of individual organisms at each trophic level.

p.21
Types of Ecosystems

Name a type of terrestrial ecosystem.

Forest ecosystem.

p.2
Introduction to Ecosystems

What role does Ecology play in environmental studies?

It studies interactions among organisms and their environment.

p.33
Types of Ecosystems

What are the abiotic components of ponds?

Heat, light, pH of water, CO2, oxygen, calcium, nitrogen, phosphates.

p.2
Introduction to Ecosystems

How does Sociology contribute to environmental studies?

By examining social structures and their impact on the environment.

p.23
Types of Ecosystems

What defines a mesotrophic lake?

It has an intermediate level of productivity and medium-level nutrients, usually with clear water and submerged aquatic plants.

p.32
Types of Ecosystems

What are the characteristics of deserts?

Hot, low rain areas suffering from water shortage and high wind velocity.

p.22
Types of Ecosystems

What is the littoral zone?

A shallow zone near the shore with rooted plants and phytoplankton.

p.40
Biodiversity and Conservation

What is meant by ecological integrity value?

The importance of maintaining all functionally critical aspects of the ecosystem.

p.35
Ecological Succession

How do Pioneer species vary during ecological succession?

They are the first to colonize a bare site and prepare the habitat for other species.

p.26
Public Awareness and Climate Change

How do wetlands contribute to tourism?

They attract visitors for recreational and educational opportunities.

p.45
Biodiversity Conservation Methods

What is the significance of Wetlands in biodiversity conservation?

They provide critical habitats for various species and help maintain ecological balance.

p.19
Nutrient Cycling

What is the phosphorus cycle?

The process by which phosphorus moves through the environment, including soil, water, and living organisms.

p.19
Nutrient Cycling

Why is phosphorus important for living organisms?

It is a key component of DNA, RNA, and ATP, essential for energy transfer and genetic information.

p.51
Public Awareness and Climate Change

What is the mission of Greenpeace?

Opposing environmental abuse, saving endangered species, and increasing public awareness.

p.43
Threats to Biodiversity

What are the main threats to biodiversity?

Loss of species, ecosystems, genes, and extinction.

p.51
Biodiversity Conservation Methods

What is the purpose of the World Wide Fund for Nature (WWF)?

To conserve nature and reduce the most pressing threats to the diversity of life on Earth.

p.3
Public Awareness and Climate Change

What does the 'Tragedy of Commons' illustrate?

The conflict between individual short-term interests and long-term environmental health.

p.43
Threats to Biodiversity

What role do natural calamities play in biodiversity loss?

They can destroy habitats and lead to species extinction.

p.36
Types of Ecosystems

What does the term 'Aeolian Zone' refer to?

A dry sediment area influenced by wind processes.

p.17
Nutrient Cycling

What are the main processes involved in the carbon cycle?

Photosynthesis, respiration, decomposition, and combustion.

p.40
Biodiversity and Conservation

What is commodity value in the context of biodiversity?

Utilization value of organisms to humans as food and medicine.

p.35
Ecological Succession

What is the outcome of the Stabilisation phase in succession?

The development of a climax community.

p.2
Public Awareness and Climate Change

What is the significance of Climate Modelling in environmental studies?

It helps predict future climate conditions and impacts.

p.18
Nutrient Cycling

What is the significance of denitrification?

It converts nitrates back into nitrogen gas (N2), returning it to the atmosphere and completing the cycle.

p.26
Environmental Priorities in India

What is one way wetlands help with erosion?

They provide erosion control and sediment retention.

p.18
Nutrient Cycling

How do plants assimilate nitrogen?

By absorbing nitrates from the soil and using them to synthesize proteins and nucleic acids.

p.45
Biodiversity Conservation Methods

What role do Sacred Trees and Lakes play in biodiversity conservation?

They are protected areas that help preserve local biodiversity.

p.33
Threats to Biodiversity

What are some anthropogenic effects on ponds?

Chemical runoff, eutrophication, groundwater depletion, introduction of invasive species, habitat degradation, urban sprawl, waste disposal.

p.51
Biodiversity Conservation Methods

What is the aim of the Convention on International Trade in Endangered Species (CITES)?

To ensure international trade in specimens does not threaten their survival.

p.49
Biodiversity and Conservation

What characterizes the Buffer Zone?

It provides protection for the Core Zone in its natural condition and allows for limited recreation, tourism, and research activities.

p.19
Nutrient Cycling

What role do plants play in the phosphorus cycle?

Plants absorb phosphorus from the soil, which is then passed on to herbivores and other organisms in the food chain.

p.31
Types of Ecosystems

What are some biotic components of the Taiga?

Coniferous trees like pines, herbivores like moose and elk, and omnivores like bears.

p.19
Nutrient Cycling

What human activities can disrupt the phosphorus cycle?

Agricultural runoff, mining, and the use of phosphorus fertilizers.

p.31
Types of Ecosystems

What are some biotic components of the Tundra?

Short vegetation, caribou, polar bears, and musk ox.

p.31
Types of Ecosystems

What types of trees are found in Temperate Forests?

Deciduous trees (like oaks and maples) and coniferous trees (like pines).

p.16
Nutrient Cycling

What is the major difference between energy flow and nutrient flow?

Nutrient flow is cyclic while energy flow is unidirectional.

p.26
Nutrient Cycling

What role do wetlands play in water quality?

They act as natural water filtration systems.

p.23
Types of Ecosystems

What is the nutrient content of oligotrophic lakes?

Low nutrient content.

p.44
Threats to Biodiversity

What does Near Threatened indicate?

Close to becoming threatened or may meet the criteria for threatened status.

p.33
Types of Ecosystems

What commercial services are associated with ponds?

Water supply, hydropower, tourism, aquaculture, and fisheries.

p.50
Biodiversity Conservation Methods

What is the purpose of notifying land within 10 km of national parks and wildlife sanctuaries?

To designate it as eco-fragile zones or Eco-Sensitive Zones (ESZ).

p.18
Nutrient Cycling

What is ammonification?

The process of converting organic nitrogen from dead organisms into ammonia.

p.2
Environmental Priorities in India

What is Coastal Management?

It involves strategies to protect and manage coastal areas.

p.19
Nutrient Cycling

How does phosphorus enter the soil?

Through weathering of rocks and decomposition of organic matter.

p.49
Biodiversity and Conservation

What types of areas are included in the Transition Zone?

Settlements, croplands, managed forests, and areas for intensive recreation and other economic uses.

p.50
Threats to Biodiversity

What are some challenges and threats to Eco-Sensitive Zones?

Development pressures, habitat loss, and pollution.

p.50
Biodiversity Conservation Methods

What can be considered as a way forward for Eco-Sensitive Zones?

Strengthening policies and community involvement in conservation.

p.52
Biodiversity Conservation Methods

What is the aim of Rhinoceros Conservation?

To protect rhinoceros populations and their habitats.

p.31
Types of Ecosystems

What types of organisms are abundant in Temperate Forests?

Micro-organisms and mammals such as hares, deer, and coyotes.

p.48
Biodiversity and Conservation

What is a potential area for preservation in Biosphere Reserves?

Traditional tribal or rural modes.

p.40
Biodiversity and Conservation

What does amenity value refer to?

The value of human visiting, viewing, or learning about biodiversity.

p.45
Biodiversity Conservation Methods

What is a Biodiversity Hotspot?

A region with a significant level of biodiversity that is under threat.

p.8
Energy Flow and Ecological Pyramids

Arrange the following in increasing order of NPP: Desert, Deep Ocean, Coral Reef, Lakes.

Desert < Deep Ocean < Lakes < Coral Reef.

p.16
Nutrient Cycling

What processes are included in the geological cycle of nutrient cycling?

Weathering, sedimentation, erosion, fossilization, and combustion.

p.17
Nutrient Cycling

What is the significance of decomposition in the carbon cycle?

Decomposers break down dead organic matter, returning carbon to the soil and atmosphere.

p.52
Biodiversity Conservation Methods

What is the goal of the Gene Campaign?

To promote biodiversity and protect genetic resources.

p.3
Environmental Priorities in India

Why is environmental education important?

It raises awareness and promotes sustainable practices.

p.52
Biodiversity Conservation Methods

What does SAVE stand for?

Saving Asia’s Vulture from Extinction.

p.52
Biodiversity Conservation Methods

What is the Madras Crocodile Bank Trust (MCBT) known for?

Conservation and research on crocodiles and other reptiles.

p.36
Biodiversity and Conservation

What is the role of grasslands in ecosystems?

They provide habitat for various species and contribute to nutrient cycling.

p.36
Biodiversity and Conservation

What is the function of forests in energy flow?

Forests capture solar energy and store it in biomass, supporting diverse life forms.

p.49
Biodiversity and Conservation

What do Core Zones conserve?

Wild relatives of economic species and represent genetic reservoirs.

p.49
Biodiversity and Conservation

What activities are encouraged in the Buffer Zone?

Research and educational activities.

p.3
Environmental Priorities in India

What role do environmental laws play?

They regulate and protect the environment.

p.51
Biodiversity Conservation Methods

What is TRAFFIC's relationship with IUCN and WWF?

It is a strategic alliance between IUCN and WWF.

p.52
Biodiversity Conservation Methods

What is the role of the Wildlife Institute of India?

To provide training and research in wildlife conservation.

p.2
Biodiversity Conservation Methods

What are Green Credits?

Incentives for practices that benefit the environment.

p.52
Biodiversity Conservation Methods

What does the Botanical Survey of India focus on?

The research and conservation of plant species in India.

p.40
Biodiversity and Conservation

What is functional diversity in the context of ecosystems?

The variety of functions that different species perform in an ecosystem.

p.31
Types of Ecosystems

What type of climate characterizes the Taiga?

Cold climate with extremely cold winters and mild summers.

p.19
Nutrient Cycling

What is a major environmental issue related to phosphorus?

Eutrophication, which can lead to harmful algal blooms in water bodies.

p.31
Types of Ecosystems

What characterizes Temperate Forests in terms of climate?

Seasonal variation in climate.

p.44
Threats to Biodiversity

What are the types of extinction mentioned?

Mass Extinction, Natural Extinction, Anthropogenic Extinction.

p.3
Environmental Priorities in India

What is a key strategy for managing population growth in India?

Population stabilization through carrying capacity.

p.3
Environmental Priorities in India

What is essential for effective pollution management?

Natural resource assessment and management.

p.21
Types of Ecosystems

What are the two main categories of aquatic ecosystems?

Freshwater and Marine.

p.31
Types of Ecosystems

What is a notable abiotic factor in the Taiga?

Little direct sunlight for much of the year.

p.51
Biodiversity Conservation Methods

What does TRAFFIC do?

Monitors the wildlife trade to ensure it does not threaten nature.

p.52
Biodiversity Conservation Methods

What is the focus of Ganges River Dolphin Conservation?

To protect the endangered Ganges river dolphin.

p.43
Threats to Biodiversity

What is one way pollution affects biodiversity?

It can reduce ecosystem productivity and disrupt nutrient transport.

p.40
Biodiversity and Conservation

What does option value in biodiversity signify?

The future evolutionary potential of species that can later be used for commodity value.

p.52
Biodiversity Conservation Methods

What is the role of the Zoological Survey of India?

To conduct surveys and research on the fauna of India.

p.21
Types of Ecosystems

What ecosystem is known for its biodiversity and is found in shallow tropical waters?

Coral reefs.

p.50
Biodiversity Conservation Methods

How do Eco-Sensitive Zones act as a 'shock absorber'?

By minimizing the negative impact on fragile ecosystems.

p.3
Environmental Priorities in India

How do human settlements impact public health?

They can create health risks due to environmental degradation.

p.51
Public Awareness and Climate Change

What is the role of the United Nations Environment Program?

To coordinate the UN's environmental activities and assist developing countries in implementing environmentally sound policies.

p.43
Threats to Biodiversity

What impact do exotic species have on biodiversity?

They can disrupt local ecosystems and outcompete native species.

p.43
Threats to Biodiversity

How can outbreaks of diseases threaten biodiversity?

They can decimate populations of species, leading to extinction.

p.26
Environmental Priorities in India

What infrastructure role do wetlands play?

They serve as natural transport infrastructure.

p.50
Biodiversity Conservation Methods

What does 'in-situ conservation' refer to in the context of Eco-Sensitive Zones?

Conservation of species in their natural habitats.

p.3
Environmental Priorities in India

What are strategies for controlling environmental pollution?

Monitoring and control measures.

p.21
Types of Ecosystems

What type of ecosystem includes areas that are periodically flooded with saltwater?

Wetlands/Salt Marsh.

p.19
Nutrient Cycling

How does phosphorus return to the soil?

Through the decomposition of dead organisms and waste products.

p.3
Public Awareness and Climate Change

What is a pressing need for addressing environmental issues?

Public awareness.

p.31
Types of Ecosystems

What is the annual rainfall range for Temperate Forests?

About 750 - 2000 mm.

p.43
Threats to Biodiversity

How does climate change contribute to biodiversity loss?

It causes human-induced stress on ecosystems, leading to extinction.

p.49
Biodiversity and Conservation

What is the role of the Transition Zone in a biosphere reserve?

To accommodate human activities and economic uses while maintaining a connection to the surrounding natural environment.

p.43
Threats to Biodiversity

What is one major cause of biodiversity loss?

Habitat destruction.

p.43
Threats to Biodiversity

How does poaching contribute to biodiversity loss?

It leads to the decline of species populations.

p.52
Biodiversity Conservation Methods

What does the Salim Ali Centre of Ornithology and Natural History specialize in?

Research and conservation of birds and their habitats.

p.21
Types of Ecosystems

What distinguishes natural ecosystems from artificial ecosystems?

Natural ecosystems occur without human intervention, while artificial ecosystems are created or modified by humans.

p.31
Types of Ecosystems

Where is the Tundra primarily found?

North of the Arctic Circle.

p.31
Types of Ecosystems

What is a significant abiotic characteristic of the Tundra?

The soil is frozen and covered with permafrost for much of the year.

p.52
Biodiversity Conservation Methods

What is the focus of Project Elephant?

To protect elephants and their habitats in India.

p.43
Threats to Biodiversity

What is shifting cultivation and how does it threaten biodiversity?

It's a farming method that can lead to habitat destruction and loss of species.

p.43
Threats to Biodiversity

What is the effect of natural disasters on biodiversity?

They can lead to habitat destruction and loss of species.

Study Smarter, Not Harder
Study Smarter, Not Harder