Class 12 · Ecosystem

Trophic Levels & Food Chain — NEET Biology

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📖 NCERT Source

The consumers that feed on these herbivores are carnivores, or more correctly primary carnivores (though secondary consumers). Those animals that depend on the primary carnivores for food are labelled secondary carnivores. A simple grazing food chain (GFC) is depicted below:

NCERT Biology · Class 12 · Chapter 12 · Paragraph 22
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QuestionPractice Question

Match the following: Column I A. Catabolism B. Pyramid of Numbers in tree ecosystem C. Secondary Carnivore D. GPP Column II 1. Inverted 2. Breakdown of detritus into simpler substances 3. Total photosynthesis 4. Feeds on primary carnivores

📖 Solution & NCERT Explanation
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Correct answer: A A–2, B–1, C–4, D–3

Catabolism degrades detritus. Tree pyramid inverted. Secondary carnivores feed on primary carnivores. GPP is total photosynthesis.

❓ Frequently Asked Questions
What does NCERT say about consumers that feed on?
The consumers that feed on these herbivores are carnivores, or more correctly primary carnivores (though secondary consumers). Those animals that depend on the primary carnivores for food are labelled secondary carnivores.
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.

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