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Class 11BiologyBody Fluids and CirculationsStructure and function of heart
Medium

$A$ : The first phase of ventricular filling is rapid and causes the $3^{rd}$ heart sound.
$R$ : It is because of auricular systole.

  • A
    Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
  • C
    Assertion is correct,but Reason is incorrect.
  • D
    Both Assertion and Reason are incorrect.
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Class 11 Questions

Class 11

Biology Questions

Chapter

Body Fluids and Circulations

Subtopic

Structure and function of heart

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