Q45 of 163 Page 242

In an ecosystem, the ten per cent energy available for transfer from one trophic level to the next is in the form of:

According to 10% energy rule, 10% of total energy available at each trophic level is transferred to the next trophic level in the form of food i.e. chemical energy.

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43

What percentage of sun's energy falling on the leaves of green plants is utilized by the plants in the process of photosynthesis and stored as chemical energy of food?

 44

The depletion of ozone layer in the upper atmosphere is mainly due to the emission of:

 46

The flow of energy in an ecosystem is always:

 47

The excessive exposure of humans to ultraviolet rays results in:

(i) Damage to immune system


(ii) Damage to lungs


(iii) Skin cancer


(iv) Peptic ulcers