Question

1.Calculate the amount of energy available to the organisms at the fourth trophic level if the energy available to the organisms at the second trophic level is 2000J?

Answer 1

Answer:

the amount if energy left=20J

Explanation:

according to 10% law

Answer 2

The amount of energy available to the organisms at the fourth trophic level is 20J considering that the energy available at second trophic level is 2000J.

Explanation:

• The transfer of the amount of energy in each trophic level is estimated by the Ten percent Law.
• It was proposed by Raymond Lindeman in 1942.
• According to this law, during the transfer of energy from one trophic level to another only 10% of the total energy is stored in the body of the organism and this is the only energy that gets transmitted from one trophic level to another.
• The rest 90% of the energy is lost in performing crucial body functions like respiration, reproduction, etc.
• So, according to this and the figure given in the question 20,000 J would be present in the first trophic level.
• It's 10% , that is 2000J is present in the second trophic level, and similarly 200 J would be present in the third trophic level, and lastly only 20J would be available for the organisms in the fourth trophic level.