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Solution


Q.

Read the passage given below and answer the following questions from (i) to (v):

The energy flow in the ecosystem is one of the major factors that support the survival of such a great number of organisms. For almost all organisms on earth, the primary source of energy is solar energy. It is amusing to find that we receive less than 50 per cent of the sun’s effective radiation on earth. When we say effective radiation, we mean the radiation, which can be used by plants to carry out photosynthesis.

 

(ii) If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be:
1 10 J  
2 0.1 J  
3 1 J  
4 0.01 J  

Ans.

(3)