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Write the steps from pollinatin to fertlization in plants |
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Answer» Step 1: Pollination In general, male gametes are contained in pollen, which is CARRIED by wind, water, or wildlife (both insects and animals) to reach female gametes. The pollen is deposited on a PLANT's stigma, which is part of the pistil (the elongated part of a flower extending from the ovary). This process is called pollination. Step 2: Germination Within a few minutes, pollen tubes BEGIN growing, or GERMINATING, TOWARD the egg cell. These tubes will provide a path for the sperm carried in the pollen to reach the egg. Step 3: Penetration of the Ovule The pollen tubes penetrate the ovule, which contains the female gametes. Step 4: Fertilization Sperm travel down the pollen tubes and fertilize an egg. Most angiosperms undergo double fertilization, where both an egg and the polar nuclei in the embryonic sac are fertilized. |
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