30.
What is the function of pollen tube ?
Pollen tube helps in fertilization by acting as a conduit to transport male gametes to the ovary. The pollen tube carries the male gametes and grows through the tissues of stigma and style and reaches the ovary. It releases the two male nuclei in cytoplasm of synergids , one of which fertilizes the egg cell and the other fuses with the two polar nuclei.
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