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Assertion : Duodenum is the main organ of small intestine.

Reason : In duodenum, digestion and absorption mainly occurs

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

1 Answer

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Best answer

Correct option  (d) A is correct but R is not correct.

Explanation:

Principal organ for digestion and absorption for nutrients is small intestine. Small intestine is distinguishable into three regions, a 'U' shaped duodenum, a long coiled middle portion jejunum and a highly coiled ileum. Mainly iron. calcium and amino acids are absorbed in duodenum; fatty acids, glycerol, monosaccharides and vitamins are absorbed in jejunum and absorption of vitamin B12,  bile salts and water occur in ileum.

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