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when pollen grains falls on stigma, it creates a pollen tube which dilivers pollen grain and fuses with
female gametes present in the ovule
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What is the part of the flower that receives the pollen grain from the anther?
The stigma recieves the pollen grain from the anther. It then travels down the pollen tube inside the style and goes to the ovary.
What is the role of stigma in plant reproduction?
Pollen grain lodge on stigma for pollination .
Where are a plants sperm cells located before fertilization occurs?
When a pollen grain is immature male gametophyte, it has two cells ,a generative cell and a tube cell. A pollen grain becomes a mature male gametophyte when the generative cell divides by mitosis to form two sperm cells. In most species, this process occures after the pollen grain lands on the stigma of a carpel and the pollen tube begins to form. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
What process happens when pollen falls on a flowers pistil?
Pollination brings together the gametes of a flower and it occurs when a pollen grain of the right kind lands on the stigma of the pistil. Each pollen forms a tube that grows down through the pistil and reaches the ovule in the ovary. One of the nuclei in the pollen tube unites with the egg nucleus in the ovule to form a zygote. The other sperm nucleus combines with another bigger nucleus in the ovule which develops into the endosperm.
How do the sperm nuclei in a pollen grain reach the egg nucleus in an ovule?
When they land on the style they begin to bore their way through the stigma all the way to the ovule. Through the tube made by the tube nucleus of the pollen grain: each pollen grain has two nuclei, one called generative nucleus which combines with the nuclei of the ovule, and the other called tube nucleus tube nucleus which forms a tube that penetrates the stigma till it reaches ovule then it degenerates.
When a flower is pollinated the grain of pollen falls were?
The Stigma.
What happens to a pollen grains on the stigma?
pollen grain develop a tube that goes down the style
Why do the stigma is sticky?
The stigma catches pollen and the pollen grain germinate on the stigma. The stigma is sticky to catch and trap pollen with various hairs or flaps.
How close to the egg can the pollen grain get?
when a pollen grain lands on the stigma it creates a pollen tube that goes down to the egg where sperm fuzes with the egg.
What is the part of the flower that receives the pollen grain from the anther?
The stigma recieves the pollen grain from the anther. It then travels down the pollen tube inside the style and goes to the ovary.
What grows down from the pollen grain after pollination?
A pollen tube emerges out from the pollen grain fallen on the stigma which leads the male sex cell to the ovary through style (a connection stigma & ovary.
When pollen moves from the?
pollen grain so pollination involves the transfer of 11. ________ grains from a flower'stamen to its stigma. the _____ is pollen
What is transferring pollen grains from another to the stigma of a flower?
when pollen grain are transferred from the stigma the ovule of the flower , whats takes place
What happens if more than one pollen grain is deposited on the stigma at the same time?
the fastest one gets to fertilize
Where does germination of pollen grain occur in flowering plants?
On the stigma.
Where does germination of the pollen grain occur in flowering plants?
On the stigma.
What would happen if the pollen grain from a rose flower fell on the stigma of a lemon flower?
Nothjing would happen if a pollen grain from a rose flower fell on the stigma of a lemon flower
