Question

The structural and functional unit of the striated muscle fibre is called [CBSE PMT 1998]
A) Sarcolemma
B) Sarcomere
C) Sarcoplasm
D) Myofibril

Answer 1

The answer to your question is C

Answer 2

The correct answer among all the options given is a. Sarcomere

A sarcomere is the unit that repeats itself in between two Z-lines and is thus referred to as the structural and functional unit of the striated muscle fibers.

Skeletal or striated muscles comprise of tubular cells which are known as myofibers.

Sarcomeres can be observed under a microscope as series of bands, dark and light in color.