What is holozonic nutrition? Explain the steps involved in it ?
Answers
Answer: Holozoic nutrition takes place in those organisms which take solid or liquid food through the mouth inside their body Examples of organisms having holozoic mode of nutrition are human beings, dog, cat, lion, deer, crow, frog and Digestion process of a Humanfish etc. This process takes place in following steps:
1. Ingestion
The process of taking food inside the body is called ingestion.
2. Digestion
In digestion the ingested food is converted into simple form with the help of digestive enzymes.
3. Absorption
In this stage the food digested in second step is absorbed into the cells of body.
4. Assimilation
Assimilation is the process of utilizing the food absorbed in third step by various cells of the body.
5. Egestion
Egestion is the final step of holozoic nutrition in which the undigested food is removed from the body.
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This process takes place in following steps: Ingestion. The process of taking food inside the body is called ingestion. Digestion. In digestion the ingested food is converted into simple form with the help of digestive enzymes.
The steps are:
1) Ingestion: The process of taking in the food is called ingestion.
2) Digestion: The process of breaking complex food substances into simple molecules is called digestion. Simple molecules; thus obtained; can be absorbed by the body.
3) Absorption: The process of absorption of digested food is called absorption.
4) Assimilation: The process of utilization of digested food; for energy and for growth and repair is called assimilation.
5) Egestion: The process of removing undigested food from the body is called egestion.
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