Question

Assertion : The peristaltic movements occur all along the gut. Reason (R): The lining of the gut has muscles that contract rhythmically to push the food in regulated manner.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

Remember: \textit{Peristalsis = rhythmic muscle movement of the gut}. If the reason mentions smooth muscle contractions pushing food forward, it correctly explains peristalsis.

Answer 1

The Correct Option is A

To solve the given assertion and reason type question, we need to analyze both the statements (Assertion and Reason) and determine their validity individually as well as their relationship.

1. Understanding the Assertion (A): "The peristaltic movements occur all along the gut."
   
   • Peristalsis is the process of wave-like muscle contractions that moves food along the digestive tract.
   • This action occurs throughout the gut, from the esophagus to the intestines, to push the food forward.
   • Hence, the assertion "The peristaltic movements occur all along the gut" is true.
2. Understanding the Reason (R): "The lining of the gut has muscles that contract rhythmically to push the food in a regulated manner."
   
   • The gut is lined with smooth muscles, which contract rhythmically and involuntarily to facilitate the process of peristalsis.
   • These contractions help in the regulated movement of food through the digestive tract.
   • Thus, the reason is true.
3. Relationship between Assertion and Reason:
   
   • Since the reason explains the physiological mechanism (rhythmic muscle contractions) by which peristalsis occurs, it is a correct explanation for the assertion.
   • Both statements are true, and the reason provided effectively explains why the assertion is true.

Based on the analysis above, the correct answer is: Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).