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Q. 2.     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

        

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A food chain is constituted of different trophic levels.

(b) Grass \rightarrow Goat \rightarrow Human; constitute a food chain.

Here, the grass is a producer, the goat is the primary consumer and humans are the secondary consumer. 

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HARSH KANKARIA

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