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A single pollen grain contains the generative material that forms the male gametes. It also contains the material that will form the pollen tube when the pollen lands on the pistil. These are covered by a thin layer called the intine or endospore as well as a thick protective wall called the exine or exospore.
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∙ 9y ago
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∙ 13y agoEach pollen grain contains three cells. The first is a non-reproductive cell that germinates and grows a tube into the ovule. The other two cells are sperm nuclei. When they travel through the tube into the ovule, one sperm disintegrates and the other fuses with the egg to form a zygote. This process is called pollination.
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∙ 13y agoA grain of pollen is made up of:
- a larger vegetative cell (also called the tube cell) inside of which is a
- a smaller germ cell (also called the generative cell).
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∙ 12y agothere made of pollen! that's why they are called POLLEN grains
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∙ 12y agotwo sperm nuclei and a tube nucleus
love you buddy marcos alexander
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∙ 9y agoPollen grains contain male sperms and are found in the sporangium of the anther lobe.
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∙ 11y agoMicrosporangium (anther lobe)
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∙ 12y agoovules
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∙ 11y agoflowers.
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What is the process that involves a sperm cell from a pollen grain uniting with an egg cell stored inside and ovule?
sexual reproductive
How nucleus from a pollen grain fertilize a female egg cell?
How the nucleus from a pollen grain fertilize a female egg cell
How the nucleus from a pollen grain fertilizers a female egg cell?
How the nucleus from a pollen grain fertilize a female egg cell
What is the tube that grows out of a pollen grain contains?
whats the answer to the tube that grows out of a pollen grain contains a what
What is the male sex cell from a pollen grain called?
reproductive cell
What is the process that involves a sperm cell from a pollen grain uniting with an egg cell stored inside and ovule?
sexual reproductive
How the nucleus from a pollen grain fertilizers a female egg cell?
How the nucleus from a pollen grain fertilize a female egg cell
How nucleus from a pollen grain fertilize a female egg cell?
How the nucleus from a pollen grain fertilize a female egg cell
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
What is the male sex cell from a pollen grain?
reproductive cell
The male sex cell from pollen grain?
The male sex cells from pollen grain are called male gametes.
What is the tube that grows out of a pollen grain contains?
whats the answer to the tube that grows out of a pollen grain contains a what
What is the male sex cell from a pollen grain called?
reproductive cell
When the pollen tube emerges from the pollen grain what cells are transported inside it?
Sperms. It is sperms
What does a pollen grain and ovule each contain?
Pollen grains contain the male gametes required for sexual reproduction of a plant/ flower. These are haploid, and only contain half the full set of chromosomes; the other half is contributed by the female gamete (or ovule).A grain of pollen contains:a larger vegetative cell (also called the tube cell) inside of which is aa smaller germ cell (also called the generative cell).The pollen grain "germinates" on the stigma of the receptive flower and grows down the style, once it reaches the ovule the germ cell/ nucleus fuses with the nucleus of the ovule and an embryo is formed
What kind of spore becomes a pollen grain in seed plants?
The microspore after resulting from meiosis in the microspore mother cell become pollen grain. It takes place inside the anther lobe in the sporogenous tissue and the entire process is called microsporogenesis.
How does fertilization take place in flowers?
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.
