Class 12 · Ecosystem

Energy Flow & Food Chains — NEET Biology

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📖 NCERT Source

You have read about the food chains and webs that exist in nature. Starting from the plants (or producers) food chains or rather webs are formed such that an animal feeds on a plant or on another animal and in turn is food for another. The chain or web is formed because of this interdependency. No energy that is trapped into an organism remains in it for ever. The energy trapped by the producer, hence, is either passed on to a consumer or the organism dies. Death of organism is the beginning of the detritus food chain/web.

NCERT Biology · Class 12 · Chapter 12 · Paragraph 20
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QuestionPractice Question

What is the role of decomposers in energy flow after an organism dies?

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: D They consume dead biomass and recycle nutrients

Decomposers start acting on detritus after death, releasing nutrients but not recycling energy (which flows unidirectionally).

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What does NCERT say about You have read about?
You have read about the food chains and webs that exist in nature. Starting from the plants (or producers) food chains or rather webs are formed such that an animal feeds on a plant or on another animal and in turn is food for another.
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Ecosystem, Class 12 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

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