Question

Mention the various steps of nutrition and explain them

Answer 1

Answer:

The five steps in nutrition in animals are-

a) Ingestion – The process of intake of food.

b) Digestion – Breaking down of food into smaller and simpler compounds.

c) Absorption – The simpler compounds are absorbed by blood and transported to

different parts of the body.

d) Assimilation – Utilization of the absorbed nutrients for energy, growth and

development by body.

e) Egestion – Expelling the indigestible materials from the body with some water in form

of faeces.

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Answer 2

$\textbf{Nutrition }$:

Various aspects of obtaining food, mode of intake of food and its utilisation in the body for growth and development is known as nutrition.

Various steps of nutrition are as follows :

$\textbf{Ingestion}$:

The act of getting and eating food collectively are called ingestion.

$\textbf{Digestion}$:

The breakdown of food into simpler and soluble molecules inside the body is called digestion.

$\textbf{Absorption}$:

The process by which soluble molecules present in the digested food passes into the body fluids like blood is called absorption.

$\textbf{Assimilation}$:

The process in which the absorbed food is used for producing energy and growth is called assimilation.

$\textbf{Egestion}$:

The process by which the undigested food materials are thrown out of the body is called egestion.