Tag: ecology and ecosystem

Questions Related to ecology and ecosystem

Abiotic component in an ecosystem is

evs - i issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Water

  2. Daphnia

  3. Bacteria

  4. Chlorella

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Correct Option: A
Explanation:

An ecosystem includes the interaction of the living things i.e biotic factors in a given area with the non-living environment i.e abiotic factors such as water, weather, earth, sun, soil, climate and atmosphere. Bacteria, Daphnia and Chlorella form the biotic component of the ecosystem. Thus the correct answer is option A.

Which of the following is true in an ecosystem ?

commercial applications issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Animals can live without plants

  2. Plants can live without animals

  3. Animals can survive for long without plants

  4. Plants can survive for long without animals

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Correct Option: D
Explanation:
The ecosystem is a community like a system of checks and balances between physical elements and living beings. Removal of any one component, living or non-living will eventually lead to the destruction of the ecosystem. So, plants and animals cannot live without each other. However, if animals are removed plant would still survive longer as they can perform photosynthesis.
The correct answer is 'plants can survive for long without animals'

An ecosystem may be a small or a large sized based on kind of 

commercial applications issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Habit

  2. Habitat

  3. Components

  4. Molecules

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Correct Option: B
Explanation:

Habitat is the environmental area where particular organisms live. Hence the size of the habitat determines the size of an ecosystem. More the number of the organism more the area will be covered and thus the size of the particular ecosystem increases.

Which of the following is an abiotic component?

evs - i issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Plants

  2. Animals

  3. Soil

  4. Microorganisms

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Correct Option: C
Explanation:

The correct answer is 'soil'

The biosphere consists of two components-biotic and abiotic component. Biotic components are the living things while non-living things make up the abiotic component. Plants, animals and microbes being living make up the abiotic component whereas soil being non-living is a part of an abiotic sphere.

Interaction between biotic and abiotic factors is called as _________. 

commercial applications issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Ecology

  2. Ecosystem

  3. Niche

  4. Biomes

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Correct Option: B
Explanation:

Interaction between biotic and abiotic factors is called ecosystem. Study of ecosystem is called ecology. The study of interaction and habitat or organisms in certain area is called niche and major ecosystems is called bio-mes.

Which of the following explains stable ecosystem?

evs - i issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Requires a constant energy source

  2. Requires a living system

  3. Is self-sustaining

  4. Requires cycling of materials between the living system and the environment

  5. All of the above

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Correct Option: E

The least inclusive level of ecological organization that includes interactions among living and non-living factors is 

commercial applications issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. A community

  2. A population

  3. A species

  4. A biosphere

  5. An ecosystem

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Correct Option: E
Explanation:
A. A community is a group of populations of different species in a given area.
B. Population is a group of individual organisms of the same species in a given area.
C. Species is a group of individuals which resemble each other in morphological, physiological, biochemical and behavioral characters.
D. The planet Earth along with its atmosphere (air, land, and water) that sustain life is called biosphere.
E. An ecosystem is stable, a settled unit of nature consisting of a community of organisms interacting with each other and with their surrounding physical and chemical environment.
Hence the ecological organization that includes interactions among living and non-living factors is an ecosystem.
So, the correct answer is 'An ecosystem'.

Biotic factors are

evs - i issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Chemical factors of soil which affect life

  2. Physical factors of soil which affect life

  3. All living organisms which influence other organisms

  4. Factors of atmosphere which affect life

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Correct Option: C
Explanation:

(c) Living organisms have effect on other living organisms and these constitute biotic factors or living factors.

An ecosystem contains

commercial applications issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Producers

  2. Decomposers

  3. Lentic

  4. Xeric

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Correct Option: A,B
Explanation:

An ecosystem consists of biotic and abiotic omponents. Biotic or living things involve producer, consumers and decomposers. Abiotic or nonliving things involve air, water, soil. An area with very little water is called as xeric or desert ecosystem. A lentic ecosystem is an ecosystem which consists of still water. 

Thus, the correct answer is 'Both A and B.'

Biotic community along with its interacting physical environment comprises

evs - i issues of the environment eco-system and its destruction ecology and ecosystem ecology and ecosysytem

  1. Phytosociology

  2. Phytogeography

  3. Ecosystem

  4. Ecology

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Correct Option: C
Explanation:

Biotic community along with its interacting physical environment comprises ecosystem. The biotic community involves living things like plants, animals, microorganisms. The physical environment is called as abiotic community or nonliving things. It includes air, water, land, etc. Ecology is the study of interactions of organisms with one another and with environment. 

Thus, the correct answer is 'Ecosystem.'