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Enumerate the method of fertilisation as seen in a flowering plant. |
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Answer» ln plants pollination is followed by fertilization. The pollen grains deposited on the stigma form tubes called pollen tube. One pollen tube grows through the style and reaches the ovary, where ovules are located. inside the ovule, the pollen tube releases two male gametes into the embryo sac. The embryo sac of the ovule contains the egg. One male gamete fuses with the egg. This function is called syngamy. The other male gamete fuses with the polar nuclei. This process is called the triple fusion. This mechanism of two fusions occurring in an embryo sac is called double fertilization. After fertilization, the ovary develops into the fruits and ovule into the seeds. |
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