Which of the following constitute a food-chain?
Last updated Jun 24, 2026
Correct Answer:
Option B —
Grass, goat and human
Why this constitutes a food chainA food chain represents the chronological order of who eats whom in a biological community to transfer energy. For a sequence to be a valid food chain, each organism must typically belong to a different trophic level:
Producer (Grass): These are autotrophs that produce energy via photosynthesis.
Primary Consumer (Goat): An herbivore that eats the producer.
Secondary Consumer (Human): An omnivore or carnivore that eats the primary consumer.
Why the other options are incorrect
A) Grass, wheat and mango: These are all producers. They do not consume each other.
C) Goat, cow and elephant: These are all herbivores (primary consumers). In a standard ecosystem, they do not prey on one another.
D) Grass, fish and goat: While grass is a producer, a fish (aquatic) typically does not eat terrestrial grass in this sequence, and a goat does not eat fish.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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