Describe the different types of heterotrophic mode of nutrition
Answers
Answer:
Heterotrophic nutrition is the mode of nutrition in which organisms depend upon other organisms to survive. All animals and non green plants are heterotrophic. ... All heterotrophs depend on autotrophs for their nutrition. Heterotrophic plants have only four types.
Holozoic nutrition: the word holozoic is made from two words- holo= whole and zoikos= 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.
Saprobiontic/saprophytic nutrition: Organisms feed on dead organic remains of other organisms.
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 while it itself suffers neither loss but nor does it gain. E.g.: fungi and algae, rhizobium in the roots of leguminous plants, etc.
Answer:
The four main types of heterotrophic nutrition are:
Holozoic Nutrition : Complex food is taken into a specialist digestive system and broken down into small pieces to be absorbed.
Saprophytic Nutrition : Organisms feed on dead organic remains of other organisms.
Parasitic Nutrition : Organisms obtain food from other living organisms (the host), with the host receiving no benefit from the parasite.
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.