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Question
Which of the following constitute a food-chain?
Options
Grass, wheat and mango
Grass, goat and human
Goat, cow and elephant
Grass, fish and goat
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Solution
Grass, goat and human
Explanation:
Grass is eaten by goats, and goats are eaten by humans. Grass, goat and human serve as various trophic levels of a food chain as shown below:
\[\ce{\underset{(Producer)}{Grass} -> \underset{(Herbivore)}{Goat} -> \underset{(Omnivore)}{Human}}\]
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