Question

(b) What are the different modes of nutrition? Explain with one example of each mode of nutrition.

Answer 1

Modes of nutrition mean methods of procuring food or obtaining food by an organism. There are mainly two modes of nutrition namely

• Autotrophic: Autotrophic nutrition is that mode of nutrition in which an organism makes (or synthesizes) its own food from the simple inorganic materials like carbon dioxide and water present in the surroundings (with the help of sunlight energy). Example - all green plants.
• Heterotrophic: Heterotrophic nutrition is that mode of nutrition in which an organism cannot make (or synthesize) its own food from simple inorganic materials like carbon dioxide and water and depends on other organisms for its food. Example - Humans.