Question

Write the cellular contents carried by the pollen tube.how does the pollen tube gain its entry into the embryo sac
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Answer 1

Yes, the pollen tube enters the embryo sac either through micropylar region of the ovule, through chlazal end of the ovule or through integrements of the ovule. ... After penetration the tip of pollen tube enlarges and ruptures releasing the two male gametes and the vegetative nucleus into the synergid.