Q4. Answer the following-
i. Write the steps involved in nutrition in human.
ii. What are villi and what is their function?
iii. Explain the process of digestion in amoeba with the help of diagram.
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Answer:
there are five steps
ingestion
digestion
absorption
assimilation
egestion
2 villi are the fingers like projections in small intestine which increases surface area for absorption
3
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Explanation:
pcyscho?
In biology, immunity is the capability of multicellular organisms to resist harmful microorganisms. Immunity involves both specific and nonspecific components. The nonspecific components act as barriers or eliminators of a wide range of pathogens irrespective of their antigenic make-up.
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