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Question:

Which of the following constitute a food chain?

Grass, Wheat and Mango

Grass, Goat and Human

Goat, Cow and Elephant

Grass, Fish and Goat

Solution:

Correct option is B. Grass, Goat and Human. Food chain is a series of organisms where each is dependent on the next as a source of food. Grass forms the primary producers of the food chain, goat eats grass (herbivore) and humans eats goat (carnivore). So, the correct answer is option B.