Tag: evs - i

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Questions Related to evs - i

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

Which of the following is an abiotic component?

  1. Plants

  2. Animals

  3. Soil

  4. Microorganisms
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which of the following explains stable ecosystem?

  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
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

A stable ecosystem requires energy, living organisms, self-sustaining mechanisms, and nutrient cycling to maintain balance. Since all these components are essential, 'All of the above' is the correct choice.

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

Biotic factors are

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

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

Biotic community along with its interacting physical environment comprises

  1. Phytosociology

  2. Phytogeography

  3. Ecosystem

  4. Ecology
Reveal answer Fill a bubble to check yourself
C Correct answer
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.'

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

Stability of ecosystem depends, upon

  1. Primary productivity

  2. Number of producers

  3. Number of consumers

  4. Interchange between producers and consumers
Reveal answer Fill a bubble to check yourself
D Correct answer
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.'

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

Which is the best example of interaction of biotic and abiotic factors of ecosystem?

  1. Sunlight

  2. Water

  3. Land

  4. Forests
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Forests provide excellent introduction to the foundational concepts of ecology, since they are among the most structurally and biologically diverse of the planets ecosystems. Forests are built upon highly complex relationships between living and non-living components. In a forest, abiotic factors include fundamentals such as sunlight, moisture, nutrients, bedrock and topography. Biotic components are the living members of the system. A defining trait of an ecosystem is the cycling of nutrients and energy between organisms and their environment, and it is these abiotic components that provide the foundation for interaction between members of ecological communities. 

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

Living organisms has not effect on the abiotic factor around them in an ecosystem.

  1. True

  2. False

  3. Ambiguous

  4. Data insufficient
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Living organisms constantly take in or give out various abiotic factors. Thus, each biotic factor affects the quality of the abiotic factor around itself and thus affects the lives of the other biotic factors with which it share the ecosystem.