NEET UG BIOLOGY MCQ: ECO SYSTEM

1 Hard

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Understanding +4 | -1

Given below are two statements
Statement I: According to one estimate

4 \times 10^{13} \mathrm{~kg}

of carbon is fixed annually in the biosphere through photosynthesis.
Statement II: Decomposers also contribute substaintially to

\mathrm{CO}_2

, pool by their processing of waste material and dead organic matter of land or oceans.
Choose the correct answer from the option given below:

View answer and explanation

Correct option: D

Both Statement I and Statement II are correct

Option D (Both Statement I and Statement II are correct) is correct because both statements accurately describe carbon fixation and the role of decomposers in the carbon cycle.

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I. This law was put forward by Lindeman in 1942
II. According to this law, during the transfer of food energy from one tropical level to the other, only about 10% is stored at higher trophic level and the remaining 90% is lost in respiration, decomposition and waste in the form of heat
Which of the statements given above is/are correct?
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