LIFE SCIENCE

Detailed explanation-1: -On average, only about 10% of the energy stored as biomass in one trophic level-e.g., primary producers-gets stored as biomass in the next trophic level-e.g., primary consumers. Put another way, net productivity usually drops by a factor of ten from one trophic level to the next.

Detailed explanation-2: -Only 10 % of energy is transferred from one trophic level to the next trophic level of a food chain (ten percent law, given by Linderman). In present case, energy available at producer level is 10 J. Hence energy at primary consumer level would be 1 H (10% of 10 J).

Detailed explanation-3: -He gave Lindeman’s 10% law which says that 10% of the energy is transferred from one level to the other. So, according to this theory, If the first trophic level has 10, 000 joules of energy, only 10% will pass to the second trophic level. So, the second trophic level will have 1000 Joules of energy.

Detailed explanation-4: -Thus, the correct answer is ‘10 J’.