Given the structure of a typical …
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Meghna Thapar 5 years, 6 months ago
Pollen grains are microscopic structures that vary in size and shape. This is important because inside this tough shell lie two cells: the tube cell, which will eventually become the pollen tube, and a generative cell, which contains the male sperm nuclei needed for fertilization. Only after pollination, when pollen has landed on the stigma of a suitable flower of the same species, can a chain of events happen that ends in the making of seeds. A pollen grain on the stigma grows a tiny tube, all the way down the style to the ovary. ... The ovary develops into a fruit to protect the seed.
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