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Solution


Q.

Supriya listed some important points for energy transfer in a food chain. She made an error. Point out that error.

(i) Primary consumers transfer 10% of energy to the next trophic level in the food chain.
(ii) The population at a lower trophic level is greater than the population at a higher trophic level.
(iii) Producers depend entirely on sunlight to make food.
(iv) Decomposers work at a double pace to convert complex molecules into simpler forms in case of an epidemic.
1 Only (ii)  
2 Only (iv)  
3 (i) and (iii)  
4 All of these  

Ans.

(2)

The populations at a lower trophic are greater in number than the populations at higher trophic level to fulfil the energy demand of the latter. The population of decomposers might vary but not the pace.