Question

What are the differences between autotrophic and heterotrophic nutrition . give 3 to 4 point

Answer 1

In autotrophic nutrition organism prepares its food from simple substances present in the surroundings .In heterotrophic nutrition organism obtains food from digesting organic compounds .Autotrophs are the producers in the food chain .Heterotrophs are the consumers in the food chain .Example : Plants obtain food by autotrophic nutrition .Example : Some plants and all animals obtain food by heterotrophic nutrition .utotrophs are fundamental to the food chains of all ecosystems in the world. They take energy from the environment in the form of sunlight or inorganic chemicals and use it to create energy-rich molecules such as carbohydrates. This mechanism is called primary production.Other organisms, called heterotrophs, take in autotrophs as food to carry out functions necessary for their life. Thus, heterotrophs — all animals, almost all fungi, as well as most bacteria and protozoa — depend on autotrophs, or primary producers, for the energy and raw materials they need.Types of Autotrophic nutrition: (i)Phototrophic (ii) ChemotrophicTypes of Heterotrophic nutrition : (i) Holozoic (ii) Saprophytic (iii)Parasitic and (iv) Symboitic Association

Answer 2

AUTOTROPHIC NUTRITION:

1. Autotrophs are organisms that prepare their own food through the process of photosynthesis.
2. Autotrophs are organisms that undergo autotrophic mode of nutrition.
3. All green plants are examples of autotrophs.
4. All autotrophs are producers and are placed at the primary level in the food web.
5. used as energy sources during respiration by both autotrophs and heterotrophs, recycling carbon dioxide so that it may again be used in photosynthesis.

Heterotrophic nutrition:

1. Heterotrophs are organisms which cannot prepare their own food and depend upon producers or green plants and other animals for their food.
2. This mode of nutrition is known as the heterotrophic mode of nutrition.
3. Heterotrophs are considered as consumers in the food web and are placed at a secondary or tertiary level.
4. All the non-green plants and animals, inclusive of human beings, are the best examples of heterotrophs.
5. The heterotrophs are benefited from photosynthesis in many ways by Directly by consuming plants as herbivores.