Answer:
Upon reaching the stigma, a pollen grain germinates and grows a long, thin tube called pollen tube. This tube carries the male gamete produced by the pollen grains. The pollen tube pushes through the style, into the ovary. The male gamete then enters into an ovule, which contains the female gamete or egg. After the two gametes fuse, the ovary develops into the fruit and each ovule develops into a seed.
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