What is heterotrophic nutrition. name different types of nutrition. define and give example?

Question

Answer

Answer

In nature, organisms exhibit various types of heterotrophic nutrition. They are as follows:---

1)Holozoic Nutrition
Holozoic nutrition involves the ingestion and internal processing of solid and liquid food in an organism.

2)Saprophytic Nutrition
Saprophytes (animals which follow saprophytic nutrition) feed on dead and decayed organisms for energy.

3)Parasitic Nutrition
Most parasites are harmful to the hosts’ health; sometimes, they even kill the host. Unlike commensalism, the parasite causes some harm to its host. examples are louse on a human head, Cuscuta plant, and tapeworms.

Answer

Heterotrophic nutrition is a type of nutrition in which an organism obtains its food from other organisms. The heterotrophic organism cannot produce its own food and hence depends on other organisms for survival. Heterotrophic nutrition can be classified into different types based on the mode of obtaining food.

Types of Heterotrophic Nutrition

1. Holozoic Nutrition:
Holozoic nutrition is a type of heterotrophic nutrition in which an organism ingests solid food and then digests it internally. This type of nutrition is commonly found in animals. Examples of organisms that exhibit holozoic nutrition include humans, dogs, cats, and other carnivorous animals.

2. Parasitic Nutrition:
Parasitic nutrition is a type of heterotrophic nutrition in which an organism lives on or inside another organism and feeds on its tissues or body fluids. Parasites harm their host organism and can cause diseases. Examples of organisms that exhibit parasitic nutrition include ticks, lice, tapeworms, and malaria-causing Plasmodium.

3. Saprophytic Nutrition:
Saprophytic nutrition is a type of heterotrophic nutrition in which an organism feeds on dead and decaying organic matter. Saprophytes play an important role in the ecosystem by breaking down organic matter and recycling nutrients. Examples of organisms that exhibit saprophytic nutrition include fungi, bacteria, and some insects.

4. Symbiotic Nutrition:
Symbiotic nutrition is a type of heterotrophic nutrition in which two different organisms live in close association and both benefit from the relationship. Examples of organisms that exhibit symbiotic nutrition include lichens, which are a combination of fungi and algae, and nitrogen-fixing bacteria that live in the roots of plants.

Conclusion
Heterotrophic nutrition is an important type of nutrition in which an organism depends on others for survival. It can be classified into different types based on the mode of obtaining food. Holozoic nutrition involves consuming solid food, parasitic nutrition involves living on or inside another organism, saprophytic nutrition involves feeding on dead organic matter, and symbiotic nutrition involves a mutually beneficial relationship between two organisms.

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