Question

Assertion : Water and electrolytes are almost fully absorbed in the large intestine.

Reason : In large intestine, haustral contractions (slow segmenting movements) roll the forming faeces over and over, causing absorption of water and electrolytes

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false

Answer 1

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion

The haustra of the colon (singular haustrum) are the small pouches formed by sacculation, which give the colon its segmented appearance. Its movement allows water and electrolytes to be absorbed completely from the large intestine.