The role of decomposers in the nitrogen cycle is to ?

C. Release ammonia from organic compounds, thus returning it into the soil

A. Fix atmospheric nitrogen into nitrates

B. Convert nitrates into nitrogen gas

C. Release ammonia from organic compounds, thus returning it into the soil

D. Convert ammonia into nitrites

Everyday Science · Environment, Weather & Ecology · page 22 of 40

Ecosystem MCQs with Answers

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Ecosystem, Biodiversity & Conservation MCQs (211–220)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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211.
Many food chains unite to make a ?
Correct Answer: A. Food web
One-liner
Many interconnected food chains unite to form a food web.
212.
Past Paper MCQ
Diversity studied on ecotone is?
Correct Answer: B. Beta diversity
One-liner
The diversity studied on an ecotone is Beta diversity, which measures the change in species composition between two distinct habitats or communities.
213.
Cutting down of trees is called?
Correct Answer: B. Deforestation
One-liner
Cutting down of trees is called deforestation.
214.
The animal included in the endangered species is _?
Correct Answer: D. Giant pandas
One-liner
The animal included in the endangered species is Giant pandas.
215.
Herbivores are animals that feed on plants. Herbivores are found in which link of the food chain?
Correct Answer: B. Second
One-liner
Herbivores occupy the second trophic level (link) in a food chain, after producers.
216.
The role of decomposers in the nitrogen cycle is to ?
Correct Answer: C. Release ammonia from organic compounds, thus returning it into the soil
One-liner
Decomposers break down dead organic matter and release ammonia back into the soil, a process called ammonification.
217.
Which of the following domestic waste is not recyclable?
Correct Answer: D. None of these
One-liner
All the listed domestic wastes—paper, glass bottles, and aluminum cans—are recyclable, so the correct answer is None of these.
218.
The study of animals with respect to their environment is termed as ?
Correct Answer: A. Ecology
One-liner
The study of animals with respect to their environment is termed as Ecology.
219.
A species with wide niche breadth is called?
Correct Answer: D. Generalist
One-liner
A species with wide niche breadth is called a generalist.
220.
Slow growing populations that tend to be limited by carrying capacity of environment are called ?
Correct Answer: C. K-selected populations
One-liner
Slow-growing populations limited by the carrying capacity of the environment are called K-selected populations.

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Ecosystem MCQs with Answers

Ecosystem, Biodiversity & Conservation MCQs (211–220)

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