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Question

The correct order of steps occurring in nutrition in animals is:
(a) Ingestion → Absorption → Digestion → Assimilation → Egestion
(b) Ingestion → Digestion → Assimilation → Absorption → Egestion
(c) Ingestion → Digestion → Absorption → Assimilation → Egestion
(d) Ingestion → Assimilation → Digestion → Absorption → Egestion

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Solution

(c) Ingestion → Digestion → Absorption → Assimilation → Egestion

The food is ingested through the mouth. It is then digested in the mouth, the stomach and the small intestine. Then, it is absorbed and assimilated in the small intestine, the reabsorption of water takes place in the large intestine and the undigested waste is egested through the anus.

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