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NEETZoologyBreathing and Exchange of Gases

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Vital capacity is the maximum volume of air a person can breathe out after a forced expiration. Reason (R) : Vital capacity includes Expiratory Reserve Volume (ERV), Tidal Volume (TV), and Inspiratory Reserve Volume (IRV). In the light of the above statements, choose the correct answer from the op

Options

  1. ABoth Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. BBoth Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. CAssertion is true but Reason is false.
  4. DAssertion is false but Reason is true.

Correct answer

D. Assertion is false but Reason is true.

Step-by-step solution

Assertion (A) is false because Vital Capacity (VC) is defined as the maximum volume of air a person can breathe in after a forced expiration, or the maximum volume of air a person can breathe out after a forced inspiration. It is physically impossible to breathe out further immediately after a forced expiration. Reason (R) is true because Vital Capacity is indeed the sum of Expiratory Reserve Volume (ERV), Tidal Volume (TV), and Inspiratory Reserve Volume (IRV). Therefore, the Assertion is false but the Reason is t

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