Assertion :A person undergoes fatigue very soon during exercise Reason: Muscle fibres undergo oxygen debt during exercise.

If both assertion and reason are true and reason is the correct explanation of assertion.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

If both assertion and reason are true but reason is not the correct explanation of assertion.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

If assertion Is true but reason is false.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

If both assertion and reason are false.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A If both assertion and reason are true and reason is the correct explanation of assertion.
A fast muscle is that that has to contract many times but for short intervals, it exhausts its store of ATP and glycogen and accumulates lactic acid. Hence, its contractility gradually decreases and finally stops. This is muscle fatigue.
During active work or exercise, the rate of oxygen supply by the lungs falls short of the requirement of the muscle. Hence, lactic acid accumulates in the muscle and the breathing gradually becomes hard to enhance oxygen intake by the lungs. This is known as the oxygen debt.
So, the correct option is 'If both assertion and reason are true and the reason is the correct explanation of assertion.'

Suggest Corrections

Similar questions

Read the assertion and reason carefully to mark the correct option out of the options given below :

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

(e) If assertion is false but reason is true.

Assertion: Acetic acid does not undergo haloform reaction.

Reason: Acetic acid has no alpha hydrogens.

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

SHM

\frac{1}{4} m ω^{2} A^{2}

\frac{1}{2} m ω^{2} A^{2}

Join BYJU'S Learning Program