Question

Which one of the following is not a function of large intestine?
(1) Absorption of water, minerals and certain drugs
(2) Secretion of mucus which helps in adhering the waste particles together andlubricating it for an easy passage
(3) Undigested food material enters into the caecum of the large intestine throughileocaecal valve
(4) Significant digestive activity occurs in large intestine​

Answer 1

Answer:

(4)

Explanation:

No significant digestive activity occurs in the large intestine. The functions of large intestine are :

• Absorption of some water, minerals and certain drugs.

• Secretion of mucus which helps in adhering the waste(undigested) particles together and lubricating it for an easy passage.

So the correct option is "The digestion is completed in large intestine".

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Answer 2

The correct option is- (4) Significant digestive activity occurs in large intestine.

• Large intestine is the last part of the digestive system in which no significant digestion occurs. However, it performs some other important functions.
• Large intestine is involved in the absorption of medicines, water and some minerals.
• The undigested food material enters into the caecum of the large intestine through the ileocaecal valve where water is absorbed from undigested food.
• It secretes mucus that helps in adhering the waste particles together (stool formation) so that it passes easily out of the body.