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When a pollen grain lands on stigma, pollination occurs. The pollen grain germinates and the pollen tube grows through the style. The sperm nucleus travels through the tube (generated by the tube nucleus) and fuses with an ovule which then develops into an embryo (or zygote)

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Wiki User

12y ago
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Wiki User

13y ago

1. pollination occurs when a ppollen grain lands on the stigma

2. A pollen tube grows down the style into the povary and enters an ovule(egg)

3. A sperm travels down the tube to fertilize one egg

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Wiki User

11y ago

Well, most flowers have more than one ovule, but I think what you are looking for is what the second sperm cell does. Each pollen grain produces two sperm cells, one of which fertilizes an ovule, and one of which merges with another cell to produce a food source for the ovule.


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Anonymous

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4y ago

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Q: What happens when two pollen grains land on the same stigma and after the first grain fertilises the ovule?
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Related questions

What happens to pollen grains immediately after pollination?

Pollen germination starts on compatible stigma


What happens once the pollen lands on the stigma?

Pollination


What happens to a pollen grains on the stigma?

pollen grain develop a tube that goes down the style


What part of the plant receive pollen?

stigma


What happens when pollen is moved from the anthers to the stigma?

Pollen grains contain the male gamete (sex cell).


What happens when the pollen grain falls on the stigma?

when pollen grains falls on stigma, it creates a pollen tube which dilivers pollen grain and fuses with female gametes present in the ovule


What is the job for stigma?

It allows landing of pollen grains and germination of compatible pollen grains only.


Which part of the plant contains the pollen grains?

Flower> Stamen> Anther> Pollen grains.


In what structure do the pollen grains come in contact with the ovule?

amswer stigma


Which part of the plant captures pollen grains?

The stigma.


How do the pollen grains transfer from the anther of the stigma?

ewan


What is top of the pistil that catches the pollen grains.?

The stigma