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How do you xxplain the structure of the pollen grain describe the development of pollen grain and male gamete?
Wiki User
∙ 14y ago
While still attached to the anther, the nucleus of the pollen grain divides, producing two nuclei, one of which becomes the tube nucleus, the other is called the generative nucleus. The generative nucleus divides again, forming two sperm cells.
Once the pollen grain is released from the anther, it is transported (by wind or fauna) to the stigma of the female flower. Once a pollen grain has landed on the stigma, it begins to grow a pollen tube (there are three nuclei in the pollen tube, one from the tube nucleus, and the two sperm). When the pollen tube reaches the ovary, both sperm cells enter the ovule, one fuses with the egg nucleus, the other fuses with polar nuclei that is also inside the ovule, forming the endosperm.
Wiki User
∙ 14y ago
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What structure have they evolved to obtain gamete exchange?
Pollen
Which stage of development involves initial cellular reorganization?
gamete formation
What is the best way to describe a gamete?
a haploid cell
What is an archegonium?
An archegonium is a multicellular reproductive structure which contains a large, non-motile gamete and within which an embryo will develop.
What is a normal gamete?
A gamete is a specialized cell that contains half of the DNA of the parent organism. Since the structure of gametes for different species can vary considerably normal would be any gamete thatcontains the correct amount of DNA and is capable of fertilization.If sperm is used as an example, normal would be those sperm that have the correct amount of DNA, are progressively motile and have a morphology(form/structure) that will allow them to fertilize the egg once it is reached.
What structure have they evolved to obtain gamete exchange?
Pollen
Which stage of development involves initial cellular reorganization?
gamete formation
What is the best way to describe a gamete?
a haploid cell
What name do you use to describe a cell with only one of each chromosome?
A Gamete.
What structure have seed plants evolved to obtain gamete exchange?
The answer, I believe, is pollen.Pollen is correct.== == == ==
What is an archegonium?
An archegonium is a multicellular reproductive structure which contains a large, non-motile gamete and within which an embryo will develop.
What is the Result of a male gamete fertilizing a female gamete?
The result of a male gamete fertilizing a female gamete is a zygote.
What is a normal gamete?
A gamete is a specialized cell that contains half of the DNA of the parent organism. Since the structure of gametes for different species can vary considerably normal would be any gamete thatcontains the correct amount of DNA and is capable of fertilization.If sperm is used as an example, normal would be those sperm that have the correct amount of DNA, are progressively motile and have a morphology(form/structure) that will allow them to fertilize the egg once it is reached.
Is a mosquito a gamete or somatic?
gamete
How would you describe the process of miosis?
There is two cycles to the process of meiosis. The cycles are involving a gamete mother cell and dividing them into fourths.
What change would occur immediately if both structures labeled B were damaged or blocked?
gamete would no longer be transported to structure c.
How does the male gamete in flower differs to the male gamete in animal?
The difference of these two male gamete's is that the animal gamete has purple micro fibres and the flower gamete has blue micro fibres. I hope this helps
