Question

With the help of an example of food chain prove that the flow of energy in the biosphere is unidirectional

Answer 1

Flow of energy in biosphere is unidirectional as it is the energy consumed by small organisms to big organisms. As the energy or food is passed from one organism to another 10 % of energy is reduced. Therefore Energy cannot be taken back or flow backwards, it is only flowing in a unidirectional way

Answer 2

Since only 10℅ of total energy get transferred to next trophic level so very less amount remains in the chain. So, the food chains are mostly unidirectional.