What are the different types of Heterotrophic nutrition?
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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. E.g.: human
Saprobiontic/saprotrophic 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: Certain plants live in close association with other plants for long periods and share their shelters. E.g.: fungi and algae,rizobium and leguminous plants roots
Saprobiontic/saprotrophic 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: Certain plants live in close association with other plants for long periods and share their shelters. E.g.: fungi and algae,rizobium and leguminous plants roots
DhruvkundraiMessi:
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Dear frnd,
Every non-autotrophic organism which depends on others for their food is called heterotrophs. Heterotrophs include every animal and non-photosynthetic plant which are unable to prepare organic molecules on their own. Heterotrophic nutrition can be classified into three types, based on the ways in which organisms obtain their food:
i) SAPROPHYTIC NUTRITION-
Saprophytes (animals which follow saprophytic nutrition) feed on dead and decayed organisms for energy. They consume dead and decayed remains of animals and plants. In this way, they help cleaning the environment. Some examples for saprophytes are fungi and certain types of bacteria. These are also responsible for the staling of bread, cakes etc.Saprophytes release certain enzymes to act on the complex organic matter and break it into simpler substances which can be easily consumed by them.
ii) PARASITIC NUTRITION-
Organisms which feed on other organisms by deriving out nutrients from other animals (hosts) are called parasites. Parasites extract the nutrients from the host and are harmful to their health, sometimes they even kill the host. Both animals and plants may serve as host.
In the case of a parasite, the host is never in benefit. Few examples of parasites are louse on a human head, Cuscuta plant, and tapeworms.
iii) HOLOZOIC NUTRITION-
Human follows the holozoic mode of nutrition. Holozoic nutrition means the feeding of solid and liquid food by animals. This involves the steps of ingestion, digestion, absorption, assimilation and excretion. Ingestion is the intake of food, which is broken down into simpler organic matters by a process called digestion. After extraction of useful components, every other unwanted and indigested particle is excreted out. Other holozoic organisms are animals like cat, deer, dog etc. and also amoeba.
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Every non-autotrophic organism which depends on others for their food is called heterotrophs. Heterotrophs include every animal and non-photosynthetic plant which are unable to prepare organic molecules on their own. Heterotrophic nutrition can be classified into three types, based on the ways in which organisms obtain their food:
i) SAPROPHYTIC NUTRITION-
Saprophytes (animals which follow saprophytic nutrition) feed on dead and decayed organisms for energy. They consume dead and decayed remains of animals and plants. In this way, they help cleaning the environment. Some examples for saprophytes are fungi and certain types of bacteria. These are also responsible for the staling of bread, cakes etc.Saprophytes release certain enzymes to act on the complex organic matter and break it into simpler substances which can be easily consumed by them.
ii) PARASITIC NUTRITION-
Organisms which feed on other organisms by deriving out nutrients from other animals (hosts) are called parasites. Parasites extract the nutrients from the host and are harmful to their health, sometimes they even kill the host. Both animals and plants may serve as host.
In the case of a parasite, the host is never in benefit. Few examples of parasites are louse on a human head, Cuscuta plant, and tapeworms.
iii) HOLOZOIC NUTRITION-
Human follows the holozoic mode of nutrition. Holozoic nutrition means the feeding of solid and liquid food by animals. This involves the steps of ingestion, digestion, absorption, assimilation and excretion. Ingestion is the intake of food, which is broken down into simpler organic matters by a process called digestion. After extraction of useful components, every other unwanted and indigested particle is excreted out. Other holozoic organisms are animals like cat, deer, dog etc. and also amoeba.
Hope it helped you!
#follow_me
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