Question

energy transfer is said to be unidirectional whereas biochemical transfer is said to be cyclic. why

Answer 1

energy trasfer is said to be unidirectional bcoz the energy which is captured by the autotrops does not give back to sun and it passes to heterotrops and it did not give back the energy to autotrops . from this we come to understand that energy will not given back

Answer 2

Answer:

Energy flow is unidirectional because as it transfers from one trophic level to next trophic level, it reduces only 10% is available at Successive level from previous level. Nutrient flow is cyclic because nutrients returned back into nutrient pool from the dead bodies of plants and animals by the decomposition of micro- organisms from nutrient pool. They are utilized again by plants.