What is the main function of the pollen tube after pollination?
To carry the male gametes to the ovule
After pollination, the pollen grain that lands on the stigma germinates and grows a pollen tube. This tube grows down through the style of the pistil until it reaches the ovary and enters an ovule.
The male gametes inside the pollen grain move down through this tube and are released into the ovule, where one of them fuses with the female gamete (egg) to bring about fertilisation. So the main job of the pollen tube is to deliver the male gametes to the ovule.
The pollen tube does not protect the flower from insects, it does not form the fruit wall (that develops from the ovary wall) and it does not produce nectar, which is secreted by nectaries in the flower.
Hence, To carry the male gametes to the ovule.
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Important Questions from Reproduction
Cells of the tapetum possess dense cytoplasm and generally have ________.
Human chorionic gonadotropin:
Zygotes do not undergo reduction division immediately. They produce a multicellular body called a -
Which of the following organisms does NOT show asexual reproduction by means of fission?
The pollen needs to be transferred from the stamen to the stigma. If this transfer of pollen occurs in the same flower, it is referred to as __________ . On the other hand, if the pollen is transferred from one flower to another, it is known as ______
