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a. Ingestion and Egestion.
i. The process of nutrition with intake of food, called .
ii. All the and unassimilated part of the ingested food is excreted out of the body as through the . This is known as or defaecation.
b. Diphyodont and Heterodont.
i. Human teeth are as they develop two sets in their lifetime.
ii. teeth are of four types, and thus are called as .
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