What is the correct order of the levels in a food chain?

D. Producer → Consumer → Decomposer

A. Producer → Decomposer → Consumer

B. Consumer → Producer → Decomposer

C. Decomposer → Producer → Consumer

D. Producer → Consumer → Decomposer

Everyday Science · Environment, Weather & Ecology · page 35 of 40

Ecosystem MCQs with Answers

Includes 43 past paper MCQs (marked).

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Ecosystem, Biodiversity & Conservation MCQs (341–350)

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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341.
The natural areas where strict rules are applied about human activities and settlements are called?
Correct Answer: B. National Parks
One-liner
Natural areas where strict rules are applied about human activities and settlements are called National Parks.
342.
Which of the following is not a density dependent factor?
Correct Answer: C. Drought
One-liner
Drought is a density independent factor because its impact on a population does not depend on population size or density.
343.
In marine food chain can be the producers.
Correct Answer: B. Phytoplankton
One-liner
In a marine food chain, phytoplankton are the primary producers that convert sunlight into energy through photosynthesis.
344.
Past Paper MCQ
Which of the following works as a buffer against environmental changes?
Correct Answer: D. Trees
One-liner
Trees act as a buffer against environmental changes by moderating climate, reducing erosion, absorbing pollutants, and maintaining ecological balance.
345.
What is the correct order of the levels in a food chain?
Correct Answer: D. Producer → Consumer → Decomposer
One-liner
The correct order of levels in a food chain is Producer → Consumer → Decomposer.
346.
Which of the following is an in-situ conservation method?
Correct Answer: A. Farmlands
One-liner
Farmlands are an example of in-situ conservation, where species are protected within their natural habitat.
347.
What is not included in the living components of the land environment?
Correct Answer: C. Iron Rock
One-liner
Iron Rock is not included in the living (biotic) components of the land environment; it is an abiotic component.
348.
The maximum deposition of DDT will occur in _?
Correct Answer: B. Seagull
One-liner
The maximum deposition of DDT occurs in seagull due to biomagnification, where toxic substances concentrate at higher trophic levels in a food chain.
349.
The part of the earth inhabited by living organisms; it includes both living and non-living components is called _?
Correct Answer: B. Biosphere
One-liner
The part of the Earth inhabited by living organisms, including both living and non-living components, is called the Biosphere.
350.
Feeding sequences and relationships are called?
Correct Answer: B. Food chains
One-liner
Feeding sequences and relationships among organisms are called food chains.

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Ecosystem MCQs with Answers

Ecosystem, Biodiversity & Conservation MCQs (341–350)

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