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Question

Which one of the following statement is incorrect?

(a) Heart muscles are striated and involuntary

(b) The muscles of hands and legs are striated and voluntary

(c) The muscles located in the inner walls of alimentary canal are striated and involuntary

(d) Muscles located in the reproductive tracts are unstriated and involuntary


Solution

Option (c) The muscles located in the inner walls of alimentary canal are striated and involuntary.

Smooth muscles are 'involuntary' and non-striated muscles as they cannot be controlled directly like that of skeletal muscles which are voluntary, controlled and possess striations. They , inner walls of alimentary canal are non-striated and involuntary muscles. Rest other statements are correct.


Biology
NCERT Exemplar
Standard XI

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