Autotrphic nutrition | Heterotrophic nutrition |
Food is synthesised from the inorganic raw materials such as CO2, water and sunlight. | Food is obtained directly from autotrophs. |
Chlorophyll is necessary for this process. | Chlorophyll is not necessary for this process. |
Food is prepared in the presence of sunlight, i.e. during day time only. | Food can be obtained any time. |
It is seen in some bacteria and all green plants. | It is seen in all animals and fungi. |