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Solution


Q.

Which of the following statements is not correct                          [2021]
1 Pyramid of numbers in a grassland ecosystem is upright.  
2 Pyramid of biomass in sea is generally inverted.  
3 Pyramid of biomass in sea is generally upright.  
4 Pyramid of energy is always upright.  

Ans.

(3)

Pyramid of biomass in sea is generally inverted. In an aquatic system like sea, the producers are small organisms, their biomass is least and this value gradually shows an increase towards the apex of the pyramid, thus making the pyramid of biomass inverted in shape.