Question

Write difference between the autotrophic and heterotrophic nutrition? ​

Answer 1

Answer:

Difference Between Autotrophs and Heterotrophs

Food is the only source of energy for all living organisms on this planet. This food is available from different sources. Living organisms are further divided based on the modes of nutrition:

Autotrophs

Heterotrophs

Here in this article, let us know about the differences between autotrophs and heterotrophs, along with the examples.

Difference between Autotrophs and Heterotrophs

The differences between autotrophs and heterotrophs are given below:

Autotrophs Heterotrophs

Type of Organisms

Usually members of the plant kingdom and certain unicellular organisms like cyanobacteria All members of the animal kingdom

Mode of Nutrition

Autotrophs are producers which prepare their own food. Heterotrophs are the consumers who depend on other sources for their food.

Classified into

These can be classified as photoautotrophs and chemoautotrophs. These can be classified as photoheterotrophs and chemoheterotrophs.

Presence of chloroplasts

The chloroplast helps in preparing food. They do not contain chloroplast, so cannot prepare food.

Energy is obtained from

They obtain energy from inorganic sources by converting light energy into chemical energy. They obtain energy directly or indirectly from other organisms.

Energy Storage

Autotrophs can store light energy and chemical energy. Heterotrophs cannot store energy.

In Food Chain

They are placed at the primary level in the food chain. These are placed in the secondary or tertiary level in the food chain.

Locomotion

They cannot move from their place. Can move from one place to another in search of food and shelter.

Examples

Green plants, algae and a few photosynthetic bacteria are examples of autotrophs. Cows, buffaloes, tigers, horses, humans are examples of heterotrophs.

Answer 2

Answer:

1.  Autotrophic nutrition

• The organisms that are capable of preparing their own food using simple substances that are available in their surroundings.  The conditions necessary for autotrophic nutrition are carbon dioxide, water, chlorophyll and water.
• Phototrophic and Chemotrophic are the two types of autotrophic nutrition.
• Plants are an example for autotrophic nutrition.
• Autotrophs are the producers in the food chain .

2. Heterotrophic nutrition

• The organisms which completely depend on others for their nutrition. They depend on surrounding plants and animals for food.  They cannot make the food from available inorganic substances like carbon dioxide, water and sunlight.
• Holozoic, parasitic, symbiotic association, and saprophytic are the four types of heterotrophic nutrition.
• Animals and some plants are an example for heterotrophic nutrition.
• Heterotrophs are the consumers in the food chain.

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