Q17 of 38 Page 106

Assume T1, T2, T3 and T4 are the various trophic levels from bottom to top in a pyramid. At which trophic level is maximum energy available?

In a food chain, one organism is eaten by other forming thus a kind of chain. Only 10% of the energy transferred from one trophic level to another. So with every increasing level of food chain, the energy decreases. It will be maximum at the lowest level i.e. T1 level.

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Which group of organisms are not constituents of a food chain?

(i) Grass, lion, rabbit, wolf


(ii) Plankton, man, fish, grasshopper


(iii) Wolf, grass, snake, tiger


(iv) Frog, snake, eagle, grass, grasshopper

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The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about

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What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger

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The decomposers in an ecosystem