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ICSE Class 10 Biology Question 10 of 21

Multiple-Choice Questions — Question 10

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Question

Question 10

Assertion (A): The main pulmonary artery pumps oxygenated blood from the right ventricle into the lungs.

Reason (R): Inside the lungs, the artery divides and divides several times to form capillaries around the air sacs.

  1. A is True, and R is false.
  2. A is False, and R is true.
  3. Both A and R are true.
  4. Both A and R are false.
Answer

A is False, and R is true

Reason — The pulmonary artery does not pump oxygenated blood. In fact, it pumps deoxygenated blood from the right ventricle to the lungs for oxygenation. After oxygenation, the oxygenated blood returns to the heart through the pulmonary veins.