The stigma provides .......
germination of pollen on it.
for
O Oxygen
Water
Pectin
Malic acid.
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Answer:
Pectin
Explanation:
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The stigma provides water for germination of pollen on it.
Explanation:
- The ovules in flowering plants are held within a hollow organ called the pistil and pollen is deposited on the stigma, the pistil's receptive surface.
- Pollen grains germinate on the stigma by absorbing water and nutrients and the pollen grain develops a little pollen tube that travels through the style to the ovary. To produce a pollen tube, the tube cell enlarges and emerges from the pollen grain through one of the germ pores. The tube nucleus falls to the pollen tube's tip.
- The pollen grain lands on the stigma, which initiates pollen germination. The pollen grain's cell divides into two cells one of which is smaller and known as the generative cell and the other known as the tube cell. The intine emerges from the germ hole and forms a pollen tube.
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