Question

Consider the food chain grass → grasshopper → mouse → snake → hawk. How much of the chemical energy fixed by photosynthesis of the grass (100%) is available to the hawk?

Answer 1

Answer:

0.01%

Explanation:

According to the ten percent rule of energy transfer, whenever energy is transferred from one trophic level to a higher trophic level only 10% of total energy available at the lower level gets transferred to a higher one.

Therefore, when the energy is transferred along with the food chain:

grass → grasshopper → mouse → snake → hawk, from grass to hawk there is a loss of 10% of energy at each level.

Therefore, the hawk only gets 0.01% of the energy from the grass.

Answer 2

Answer:

The best answer is Grass. The grass is photosynthetic, which means grasses make their energy from the sun. About 10% of this total energy is available to other organisms in the food chain.

Explanation: