Q. 1. What are the differences between autotrophic nutrition and heterotrophic nutrition?
The differences between autotrophic nutrition and heterotrophic nutrition are given below:
Autotrophic Nutrition | Heterotrophic Nutrition |
(i) Food is synthesized by the organism itself by using the energy from sunlight using simple molecules like H2O and CO2 through photosynthesis. | (i) The organism is dependent on other organisms for food as Heterotrophic organisms cannot prepare their food by themselves as autotrophs do. |
(ii) A green pigment called chlorophyll is necessary as it entraps the energy from sunlight. | (ii) No such pigment is required in this mode of nutrition. |
(iii) All green plants and bacteria have this mode of nutrition, | (iii) All animals and some fungi have this mode of nutrition. |