Muscle Classification and Properties — NEET Biology
📚 Practice ConceptYou have studied in Chapter 8 that the cilia and flagella are the outgrowths of the cell membrane. Flagellar movement helps in the swimming of spermatozoa, maintenance of water current in the canal system of sponges and in locomotion of Protists like Euglena. Muscle is a specialised tissue of mesodermal origin. About 40-50 per cent of the body weight of a human adult is contributed by muscles. They have special properties like excitability, contractility, extensibility and elasticity. Muscles have been classified using different criteria, namely location, appearance and nature of regulation of their activities. Based on their location, three types of muscles are identified: (i) Skeletal (ii) Visceral and (iii) Cardiac.
Assertion (A): Muscles contribute exactly 40-50 per cent of the body weight in human adults. Reason (R): Muscle tissue is the most abundant tissue type in the human body.
View solution & NCERT explanation
Correct answer: D — If the assertion is false but the reason is true.
NCERT states “About 40-50 per cent of the body weight of a human adult is contributed by muscles” - the qualifier “About” indicates approximation, not exact percentage. The Assertion removes this qualifier making it false (individual variation exists). The Reason is independently true from NCERT context about muscle abundance, but the Assertion is false due to removed qualifier.
What does NCERT say about You have studied Chapter?
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.