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  1. Which cell can contract and relax?

    2. A.

     Muscle cells
    B.

     Excretory cells
    C.

     Nervous cells
    D.

     Respiratory cells

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    Answer : Option A

    Explanation :

    Muscle Tissue: A collection of muscle fibers that can contract and relax to move body parts. Examples include cardiac (heart) muscle, skeletal muscle (in limbs, trunk, jaw and face) and smooth muscle (in digestive tract, eyes, blood vessels and ducts).

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