Q171 / 180 · AIIMS 2019 (25 May) · Zoology

Assertion : The cardiac output of an ordinary man and of an athlete is the same. Reason : It is impossible to alter the stroke volume as well as heart rate.

  • 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.
  • Correct answer
    D
    If both assertion and reason are false.

Solution

The amount of blood pumped by heart per minute is called cardiac output or heart output. The cardiac output of an ordinary man will not be same as of an athlete. The heart rate increases during exercise, fever, fear and anger.

Hence, the correct answer is option: 'D'.

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