Question

Differentiate between autotrophic and Heterotrophic mode of nutrition.

Answer 1

Answer:

Autotrophic nutrition is the mode of nutrition whereby a living organism is able to create/produce its own food. Green plants and some types of bacteria are usually considered as a good example of autotrophs. They can synthesize inside their cells organic food such as starch, sugar, fats and proteins. They do this with the help of carbon dioxide and water in the presence of sunlight.  Examples of autotrophs include:

*Plants

*Algae-Green algae and red algae

*Bacteria such as cyanobacteria

Heterotrophic mode of nutrition is the mode of nutrition whereby a living organism cannot create/produce their own food. They are dependent on green plants or animals for their food. All the non green plants and animals inclusive of human beings are usually categorized as heterotrophs.

Explanation:

Answer 2

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The process of procuring food by an organism is called mode of nutrition.

There are 2 modes of nutrition :

1. Autotrophic Mode Of Nutrition
2. Heterotrophic Mode If Nutrition.

Let us look at what each of them are.

⟹ The word autotrophic means self-nourishing. And in autotrophic mode of nutrition, usage of the simple food materials is done that are obtained from inorganic sources in the form of carbon dioxide and water.

⟹ The word heterotrophic means other-nourishing. Heterotrophs obtain their food from sources other than photosynthesis. They cannot synthesise their own food like autotrophs.

The following types are those that follow heterotrophic mode of nutrition.

• Herbivore's
• Carnivore's
• Saprophytes
• Parasites

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