Tag: issues of the environment

Questions Related to issues of the environment

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

Show answer
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

Show answer
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

Show answer
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

Show answer
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.'

Well known ecosystem ecologist is

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

  1. P. Maheshwaii

  2. E.P. Odum

  3. M.S. Swaminathan

  4. W. Sutherland

Show answer
Correct Option: B
Explanation:

Ecosystem ecology is the study of living (biotic) and nonliving (abiotic) components of an ecosystem and their interactions within an ecosystem. Well known ecosystem ecologist is E. P. Odum. Eugene Pleasants Odum is well known for his pioneering work on ecosystem ecology. He wrote a book on 'Fundamentals of Ecology.'

Thus, the correct answer is 'E.P. Odum.'

Stability of ecosystem depends, upon

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

  1. Primary productivity

  2. Number of producers

  3. Number of consumers

  4. Interchange between producers and consumers

Show answer
Correct Option: D
Explanation:

Stability of ecosystem depends upon interchange between producers and consumers. Producers and consumers occupy different trophic levels of a food chain. High interactivity between producers and consumers makes the ecosystem to be independent of outside factors for its stability.

Thus, the correct answer is 'Interchange between producers and consumers.'

Given below are the characteristic features of an ecosystem
(a) Little diversity
(b) Little cycling of nutrients
(c) High productivity
These features are correct for

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

  1. Forest ecosystem

  2. Cropfield ecosystem

  3. Grassland ecosystem

  4. More than one option is correct

Show answer
Correct Option: A

 Why are crop fields known as artificial ecosystems?

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

  1. Crop fields are man made.

  2. Some biotic and abiotic components are manipulated by humans for the production of crop.

  3. Both A and B.

  4. None of the above.

Show answer
Correct Option: C
Explanation:
Crop fields are man made and some biotic and abiotic components are manipulated by humans. Artificial ecosystems are those ecosystems which are modified and managed by human beings.
Crop fields are man-made, plants do not grow naturally rather most of the plants are grown by humans according to the season, type of soil, etc. Crop fields are not like wild forest area which is left to the care of nature and can sustain itself.
In crop fields, the land is managed, soil is prepared for sowing seeds, then irrigated and further progress is also kept under observation for getting good yield.
Thus, crop fields are known as artificial ecosystems.
Therefore, the correct answer is option C.