7th Class Science Sample Paper Science Sample Paper - 6

  • question_answer
    Describe the events taking place in a flower after pollination till fertilization.

    Answer:

    As soon as the pollen grain falls on the stigma, it starts germinating and forms a pollen tube. This pollen tube passes through style and reaches the ovary. The pollen tube contains male gametes which are released and one of them fuses with the egg to form zygote.                                        


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