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  5. Cells and Tissues / कोशिका और ऊतक

Railways General Science & Technology Cells and Tissues / कोशिका और ऊतक Sample Paper Tissues Sample Test Paper-27

  • question_answer
    The two kidney shaped cells of the stomata are called

    A)  Epidermis         

    B)  Guard cells

    C)  Stoma 

    D)  Phloem

    Correct Answer: B

    Solution :

    [b] A stoma is a tiny opening or pore, found mostly on the underside of a plant leaf, and used for gas exchange. The pore is formed by a pair of specialized sclerenchyma cells known as guard cells which are responsible for regulating the size of the opening.


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