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NEET UG BIOLOGY MCQ: STRUCTURAL ORGANISATION IN ANIMALS

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Each muscle is made up of long, cylindrical fibres arranged in parallel arrays. These fibres are composed of numerous fine fibrils called

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Correct option: A

Myofibrils

Option A (Myofibrils) is correct because muscle fibers are composed of numerous fine fibrils called myofibrils, which contain the contractile proteins.

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:- Read the following 4-statements (i – iv) and accordingly mark the option that has both correct statements.
i) Cardiac fibres are branched with one or more nuclei.
ii) Smooth muscles are unbranched and cylindrical.
iii) Striated muscles can be branched or unbranched.
iv) Involuntary muscles are non-striated. The ciliated columnar epithelial cells in humans are known to occur in The outermost wall of spermatophore of cockroach is composed of the secretions of