Which among the following are categorized under autotrophs 1 Phototrophs 2 Chemotrophs 3 Parasites 4...........

Environment and Ecology Biodiversity

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Which among the following are categorized under autotrophs?

1. Phototrophs

2. Chemotrophs

3. Parasites

4. Saprophytes

Select the correct answer using the code given below.

1 Only

1 and 2 Only

2,3 and 4 Only

All of the above

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Explanation:

Autotrophs comprise those species which produce their food themselves. These include:

Phototrpohs - which prepare food through photosynthesis using solar radiation.

Chemotrophs - which prepare food through chemosynthesis from inorganic substances by oxidation.

Heterotrophs include:
Saprophytes - depend on organic compounds in solution derived from dead plants and animals
Holozoic nutrition- is a type of heterotrophic nutrition that is characterized by the internalization (ingestion) and internal processing of liquids or solid food particles.Protozoa, such as amoebas, and most of the free living animals, such as humans, exhibit this type of nutrition.
Parasites - depend on living organisms.