Hello Gyanendra,

Holozoic Nutrition is the mode of nutrition in which the food is taken in solid or liquid form from the outside and is digested inside  the body. the steps involved holozoic nutrition are ingestion ,digestion ,absorption ,assimilation and egestion.
eg- human beings

Thanks for asking the question, keep learning.

Holozoic nutrition is a type of mode of nutrition in which an organism ingests complex organic matter and digests it internally to obtain nutrients. This type of nutrition is commonly observed in animals, including humans.

**Process of holozoic nutrition**

The process of holozoic nutrition involves several steps, including:

1. Ingestion: The organism ingests food through mouth or any other opening in its body.

2. Digestion: The food is broken down into smaller particles by mechanical and chemical digestion.

3. Absorption: The nutrients are absorbed into the bloodstream through the walls of the digestive system.

4. Assimilation: The absorbed nutrients are transported to different parts of the body and used for various metabolic processes.

5. Egestion: The waste products are eliminated from the body through the anus or any other opening.

**Examples of organisms that use holozoic nutrition**

Holozoic nutrition is observed in a wide range of organisms, including:

1. Mammals: Humans, cows, dogs, cats, and other mammals obtain their nutrition through holozoic nutrition.

2. Birds: Birds ingest food through their beaks and digest it internally.

3. Reptiles: Reptiles such as snakes and lizards obtain their nutrition through holozoic nutrition.

4. Fish: Fish ingest food through their mouths and digest it internally.

5. Invertebrates: Many invertebrates such as insects, spiders, and worms also use holozoic nutrition.

**Advantages and disadvantages of holozoic nutrition**

Advantages:

1. Holozoic nutrition allows organisms to obtain a wide range of nutrients from different sources.

2. It allows for efficient use of resources since organisms can digest and assimilate complex organic matter.

Disadvantages:

1. Holozoic nutrition requires a complex digestive system, which can be energy-intensive.

2. It can also be time-consuming since organisms need to hunt or gather food.

In conclusion, holozoic nutrition is a type of mode of nutrition that involves the ingestion and digestion of complex organic matter to obtain nutrients. It is observed in a wide range of organisms and offers several advantages and disadvantages.