define nutrition name the two modes of nutrition
Answers
Answer: Nutrition is the process to obtain and utilize food or nutrients. It is mainly divided into two categories autotrophic (organisms prepare their own food) and heterotrophic (organisms obtain food from other organisms). Autotrophic mode of nutrition is further divided into two categories such as:
1. Phototrophic: Organisms prepare their own food in the presence of sunlight, water and carbon dioxide e.g., green plants.
2. Chemotrophic: Organisms prepare their own food in the presence of chemicals such as nitrate, hydrogen sulphate, iron etc, e.g., sulphur bacteria
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Nutrition is the process of taking food by living organisms and utilise it to perform different kinds of functions.
TWO MODES OF NUTRITION
Autotrophic nutrition
- In this mode of nutrition, organisms makes their own food using some raw materials.
- Example : Plants
Hetrotrophic nutrition
- In this mode of nutrition, organisms are depend on other organisms for food.
- Example : Humans