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Where does germination of the pollen grain occur in flowering plants?
Wiki User
∙ 12y ago
On the stigma.
Wiki User
∙ 12y ago
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Where does germination of pollen grain occur in flowering plants?
On the stigma.
Why can flowering plants be fertilized without water?
The male gametes in most of the non-flowering plants are motile and these are carried to the female gamete by their own movement in presence of water.
When a pollen grain joins with an ovum?
A polln grain after germination sends a pollen tube in the ovule to release male gametes near the egg cell or ovum.
How does fertilization take place in a flower?
the pollen grain lands ot the tip of pistle called as stigma and then pollen tube from pollen grain germinates and it reaches the ovary through style(containing 2 male gamets).. then fertilisation takes place... or is when the male sex cells inside the pollen grains fuses with the female sex cells inside to produce a seed embryo Pollination transfers the pollen grain to the stigma. However, for hertilisation to take place, the nucleus of the pollen grain must fuse with the nucleus of the ovum, which is inside an ovule in the ovary. To transfer the nucleus to the ovum, the pollen grain grows a tube, which digest its way through the tissue of the style and into the ovary. Here it grows around the opening in an ovule. The tip of the tube dissolves and allows the pollen grain nucleus to move out of the tube and into the ovule. Here it fertilises the ovum (egg cell) nucleus.
What is a pollen tube?
A pollen tube is part of the male gametophyte of seed plants. It acts as a conduit to transport the male gamete cells from the pollen grain
Where does germination of pollen grain occur in flowering plants?
On the stigma.
What is pollen grain like from non flowering plants?
Pollen grains from plants which do not flower are very similar to that of flowering plants, except they are different.
The male gametophyte in flowering plants will be found within the?
it is pollen
How do seeds Reproduction?
it depends on gymnosperm (naked seed) or angiosperm (flowering plant) this is the angiosperm - Another germination event during the life cycle of gymnosperms and flowering plants is the germination of a pollen grain after pollination. Like seeds, pollen grains are severely dehydrated before being released to facilitate their dispersal from one plant to another. They consist of a protective coat containing several cells (up to 8 in gymnosperms, 2-3 in flowering plants). One of these cells is a tube cell. Once the pollen grain lands on the stigma of a receptive flower (or a female cone in gymnosperms), it takes up water and germinates. Pollen germination is facilitated by hydration on the stigma, as well as the structure and physiology of the stigma and style.[1] Pollen can also be induced to germinate in vitro (in a petri dish or test tube).[3][4] During germination, the tube cell elongates into a pollen tube. In the flower, the pollen tube then grows towards the ovule where it discharges the sperm produced in the pollen grain for fertilization. The germinated pollen grain with its two sperm cells is the mature male microgametophyte of these plants.[1
Why used the mature pollen grain in pollen germination experiment?
this is because premature pollen grain do not contain the sperm cell for fertilization. only the generative nucleus in mature pollen grain will divide mitosisly to form sperm cell for fertilization
When a pollen grain joins an ovum?
A polln grain after germination sends a pollen tube in the ovule to release male gametes near the egg cell or ovum.
What do plants use the pollen tube for?
A pollen tube is part of the male gametophyte of seed plants. It acts as a conduit to transport the male gamete cells from the pollen grain, either from the stigma (in flowering plants) to the ovules at the base of the pistil, or directly through ovule tissue in some gymnosperms.
What is the sequence of events for reproduction in flowering plants?
Pollen is transferred from the anther to the stigma. The chemical inside of the stigma then stimulates the pollen and grows a long tube like structure inside of the style that leads to the ovary and ovules. Once the sperm is released from a pollen grain, fertilization happens within the plant. When fertilization is complete, the ovule creates a seed.
Is pollination in animals a form of asexual reproduction?
Pollination only occurs in flowering plants. It is part of the process of sexual reproduction. The pollen grain contains the male gamete.
What is pollen grain analysis?
Pollen grains are the microscopic male reproductive particles released from flowering plants. As these grains are vital for the survival of flowering species, evolution has ensured that individual species produce different types of pollen grains. Pollen grains are also made of a resistant organic material (sporopollenin) that means they are often remarkably well-preserved in sediments many thousands of years old.
Why can flowering plants be fertilized without water?
The male gametes in most of the non-flowering plants are motile and these are carried to the female gamete by their own movement in presence of water.
When a pollen grain joins with an ovum?
A polln grain after germination sends a pollen tube in the ovule to release male gametes near the egg cell or ovum.
