Human Nutrition — Biology STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 ScienceBiologyHuman Nutrition4 Marks
Question
Explain various steps involved in nutrition.
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Answer
The various steps involved in nutrition are as follows:
Ingestion: It is the introduction of food into mouth, i.e. intake of food (eating) inside the body.
Digestion: The process during which the complex, non-diffusible and non-absorbable food substances are converted into simple, diffusible and absorbable substances by the action of enzymes is called digestion.
Absorption: The process of diffusion of digested food into blood and lymph is called absorption.
Assimilation: The process by which protoplasm is synthesized into each cell of the body by utilizing simple food substances are called assimilation.
Egestion: The elimination of undigested food from the body is called egestion.
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