What is heterotrophic nutrition? Which are heterotrophic animals?
What is heterotrophic nutrition? Which are heterotrophic animals?
Heterotrophic nutrition is nutrition obtained by digesting organic compounds.
The four main types of heterotrophic nutrition are:
Holozoic nutrition: The word holozoic is made from two words- Holo means whole and Zoikos means animals and literally means animals which eat their food whole. 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. E.g.: human
Saprobiontic/saprophytic nutrition: Organisms feed on dead organic remains of other organisms. E.g.: decomposers
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. E.g.: tapeworms
Symbiotic nutrition: Two organisms live in close association to benefit each other or one of the two benefits the other whilst it itself suffers neither loss but nor does it gain. E.g.: fungi and algae, rhizobium and leguminous plants roots.
Heterotrophic nutrition is nutrition obtained by digesting organic compounds.
The four main types of heterotrophic nutrition are:
Holozoic nutrition: The word holozoic is made from two words- Holo means whole and Zoikos means animals and literally means animals which eat their food whole. 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. E.g.: human
Saprobiontic/saprophytic nutrition: Organisms feed on dead organic remains of other organisms. E.g.: decomposers
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. E.g.: tapeworms
Symbiotic nutrition: Two organisms live in close association to benefit each other or one of the two benefits the other whilst it itself suffers neither loss but nor does it gain. E.g.: fungi and algae, rhizobium and leguminous plants roots.
