Assertion: In a food chain, members of successive higher levels are fewer in number.

Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

If both assertion and reason are true and reason is the correct explanation of assertion

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If both assertion and reason are true but reason is not the correct explanation of assertion

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If assertion is true but reason is false

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If both assertion and reason are false

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Solution

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion
Every trophic level in a food chain obtains energy (food) from the previous lower level organisms. Members of successive higher levels are fewer in number because those organisms at higher trophic level depend upon the availability of organisms which serve as food at the lower level. For example: the number of deer should be more in a forest as compare to the number of tiger in such a way that deer serves as food for the tiger.

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Similar questions

Assertion : In a food chain members of successive higher levels are fewer in number.

Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

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(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
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Assertion: In a food chain, members of successive higher levels are fewer in number. Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

Assertion: In a food chain, members of successive higher levels are fewer in number.

Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.