Muscle Fatigue and Fiber Classification — NEET Biology
📚 Practice ConceptRepeated stimulation of muscles leads to fatigue. Muscles are classified as Red and White fibres based primarily on the amount of red coloured myoglobin pigment in them.
Assertion (A): Muscle fibres can be classified based on their metabolic characteristics. Reason (R): Red fibres depend on anaerobic processes while white fibres utilize oxygen for ATP production.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms muscle fibres are classified by metabolic characteristics (Assertion true). However, NCERT states “Red fibres contain plenty of mitochondria which can utilise oxygen for ATP production and are aerobic muscles, whereas White fibres possess very less quantity of myoglobin and depend on anaerobic process for energy” - the Reason reverses the metabolic characteristics.
What does NCERT say about Repeated stimulation muscles leads?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.