Energy Flow

Energy is the capacity to do work. Solar energy is transformed into chemical energy by the process of photosynthesis, and is stored in plant tissue and then transformed into mechanical and heat forms during metabolic activities.

The energy, in the biological world, flows from the sun to plants and then to all heterotrophic organisms such as microorganisms, animals and man.

Energy flow is the key function in an ecosystem and it is unidirectional.

'The study of energy transfer at different trophic level is known as 'Bioenergetics'.