Food chains and the energy flow within an ecosystem provide an important understanding of contingencies and mutual dependencies of organisms. The given below flow chart depicts the energy flow within some members of a grassland ecosystem. The grass in the below ecosystem transducer 120,000 J of sunlight and fixes it into 12,000 J of energy. It is established that 90% of the energy of one trophic level is not passed to the next trophic level. Further assume that the energy transferred from one trophic level to the next is equally shared among the different organisms at that trophic level.

Based on the above information, indicate the amount of energy that an organism C may have received from an organism from the previous trophic level.

Options

A. 1,20,000 J
B. 12,000 J
C. 1200 J
D. 120 J

Answer

C

Explanation

This is based on ten percent law. According to ten percent law, only 10% of energy entering a particular trophic level of organisms lis. available for transfer to the next higher trophic level.
A=1200 J, B=1200 J, C=1200 J, D=120 J , E=12 or 120 J , F=120 J