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7th Class Science Reproduction In Plants Question Bank Reproduction and Growth in Plants

  • question_answer
    Arrange the sentences given below in order to describe the process of fertilization.
    W: The pollen tube grows down through the style reaches the ovary.
    X: The pollen grain germinates on reaching the stigma.
    Y: The male gamete moves into the ovule to fuse with the ovum.
    Z: The pollen tube grows out from the pollen.
                    Which of these options are in the correct order?

    A)  WXYZ                  

    B)         XZWY  

    C)  YWZX                  

    D)         WZXY

    Correct Answer: B

    Solution :

    After pollination, pollen grains germinate on stigmas and develops the pollen tube. The pollen tube grows and reaches the ovary and fuses with the egg by a process called fertilization.


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