Question

Are plants actually producers of energy?why energy of herbivores never come back to the autotrophs?

Answer 1

Yes,plants are producers of energy ,this is the energy absorbed by the plant for photosynthesis and afterwards this energy is transfered to other organisms by food chain eg; plant-goat-lion.energy cannot be transferred back to producers because plants cannot eat animals like goat,insects,etc and without eating the energy cannot be transfered.

Answer 2

No, plants are not actually producers of energy, they can trap the energy of sun and can convert solar energy into chemical energy in the form of carbohydrates and other food materials so they are called transducers .

The energy of herbivorous never come back to autotrophs because in food chain the flow of energy is unidirectional. This means that energy can only flow in one direction . The energy is passed from one trophic level to the next to trophic level and it cannot be returned back to the previous trophic level.