Ncert Exercises & Solutions

Q.48 In relation to energy transfer in the ecosystem, explain the statement "10kg of deer's meat is equivalent to 1 kg of lion's flesh"

Ans. In an ecosystem, flow (transfer) of energy is unidirectional. As energy trapped in Ist tropic level, only 10% of energy is transferred to the next trophic level.

$\underset{(Biomass 10 kg)}{Deer} \underset{Energy lost in process of respiration and other vital activities 90 % i . e . 9 kg}{\to} \underset{(1 kg)}{Lion}$