Which of the following constitute a food chain?
(a) Grass, wheat and mango
(b) Grass, goat and human
(c) Goat, cow and elephant
(d) Grass, fish and goat
Correct Answer: (b) Grass, Goat, and Human
Explanation:
The grass is a producer, a goat is a primary consumer (herbivore), and a human is a secondary consumer (omnivore).
A food chain comprises a producer, primary consumer, secondary consumer, and decomposer, where one organism in the chain is the energy and nutrient source for another organism.
- Grass, wheat, and mango are producers.
- Goats, cows, and elephants are the primary consumers.
- Grass is the producer, while fish and goats are the primary consumers, so they cannot constitute a food chain.
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