Question

6. Differentiate between autotrophic, heterotrophic, and mixotrophic strategies for obtaining energy and

Answer 1

The differences between the autotrophic, heterotrophic, and mixotrophic strategies for obtaining energy and nutrition can be found below:

MODE OF NUTRITION:

• Nutrition is way by which an organism obtains food for its energy production. The different modes of nutrition employed by organisms is as follows:

• AUTOTROPHIC: Autotrophic is the mode of nutrition in which certain organisms like green plants, algae etc. obtain their own food by using sunlight (photosynthesis) or chemicals (chemosynthesis).

• HETEROTROPHIC: Heterotrophic is the mode of nutrition in which organisms cannot manufacture their own food hence, depend on other organisms for their energy source. Examples of heterotrophic organisms are animals, fungi etc.

• MIXOTROPHIC: Mixotrophic nutrition is one in which an organism uses more than one mode of nutrition e.g a combination of autotrophic and heterotrophic nutrition. For example, Euglena.

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