explain the type of heterotrophic nutrition
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Heterotrophic nutrition is a type of nutrition in which organisms depend upon other organisms for food to survive. Heterotrophic organisms have to take in all the organic substances they need to survive. All animals, fungi, and non-photosynthesizing plants are heterotrophic
TYPES OF HETEROTROPHIC NUTRITION
- Saprophytic,
- Parasitic,
- Holozoic
- Symbiotic.
- Saprophytic Nutrition: It is a mode of heterotrophic nutrition in which food is obtained from organic remains like dead organisms, excreta, fallen leaves, broken twigs, food articles, etc.
- Holozoic Nutrition: Complex food is taken into a specialist digestive system and broken down into small pieces to be absorbed. This consists of 5 stages, ingestion, digestion, absorption, assimilation and egestion.
- Parasitic Nutrition: Organisms obtain food from other living organisms (the host), with the host receiving no benefit from the parasite. When a parasite is present inside the body of the host, it is known as an endoparasite. These parasites suck and feed on the blood of the host.
- Symbiotic Nutrition: Two organisms live in close association to benefit each other or one of the two benefits the other while it itself suffers neither loss but nor does it gain.
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