Question

Regarding Assertion [A] and Reason [R], Choose the correct option______.

Assertion [A]: Muscles can only pull on structures not push.

Reason [R]: Balancing muscles are present.

• A. Assertion [A] is True and Reason [R] is False.
• B. Reason [R] is True and Assertion [A] is False.
• C. Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].
• D. Assertion [A] is True and Reason [R] is True but is not a correct explanation to [A].

Answer 1

The correct option is C

Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].

The efficiency of a muscle’s contraction depends on how fast an impulse or trigger can pass through the muscle to effect contraction of the entire fibre.

Contractibility refers the ability of muscle to contract and shorten. Muscles can only pull on structures not push, which is fine because balancing muscles are situated at every portion of our body to ensure that even pulling by a muscle can help you push an object.