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Not sure what level you're asking this on; pollen is not really haploid (it has several cells). Anyway, here goes: In normal sexual reproduction, half of each parents' DNA combines to form a new genetic code. A haploid cell has half the number of chromosomes contained in a diploid (normal) cell. This means that the offspring are a mixture of the characteristics of the parent organisms, creating variety within the population. If pollen was not haploid, it could not provide genetic material capable of binding to the ovum's genes. Pollen actually contains 3 haploid cells; so a pollen grain is not a single cell. When it meets the stamen of another plant, one cell forms a tube going down to the ova, acting as a sort of navigation system, while 2 of the cells follow. It was at this point that this mornings genetics lecture ended, so to find out what happens next, I'll have to wait until next Monday. Hope some of that was useful :)
What else can I help you with?
Are pollen grains haploid or diploid if they have two nuclei the generative and the tube nuclei?
Pollen grains with generative and tube nuclei have two haploid nuclei.
What parts of flowers are diploid?
The sporophyte generation of a flower is diploid, meaning that it has two sets of chromosomes in each cell. This includes the petals, sepals, stamens, and pistil. The gametophyte generation, which produces gametes through meiosis, is haploid.
Is an apple trees cell haploid or diploid?
Apple tree cells are primarily diploid, meaning they contain two sets of chromosomes, one from each parent. This diploid state is typical for most of the plant's somatic cells. However, during the process of reproduction, apple trees produce haploid gametes (pollen and ovules), which contain only one set of chromosomes.
What is the number of chromosomes in the seed of dicotyledon?
It makes no difference if it is monocotyledonous or dicotyledonous; if it is a seed it already has a full compliment of chromosomes and is diploid (2n). Only pollen and ovules are haploid (n)
Which comes first in the sexual reproduction in plants?
In sexual reproduction of plants, pollen is produced first and then transferred to the stigma on the female reproductive structure of the plant. Fertilization occurs when the pollen grain germinates and grows a pollen tube to deliver sperm cells to the ovule, resulting in seed formation.
Are pollen grains diploid in nature?
No, pollen grains are haploid in nature.
Are pollen grains haploid or diploid if they have two nuclei the generative and the tube nuclei?
Pollen grains with generative and tube nuclei have two haploid nuclei.
What is a cell that has a full copy of DNA?
Either pollen fertilization, zygote, gamete, diploid, haploid, or a chromosome
Is pollen haploid or diploid?
Fruits are diploids. Some fruits, like the bananas that we eat (not wild bananas) are triploids. This is to eliminate the seeds (hence why commercial bananas don't have seeds) Fruits that have seeds must have an even number of chromosomal pairs (2, 4, 6) to reproduce. Fruits that don't have seeds are genetically engineered and cannot be reproduced because the number of chromosomes can't evenly split during meiosis.
What parts of flowers are diploid?
The sporophyte generation of a flower is diploid, meaning that it has two sets of chromosomes in each cell. This includes the petals, sepals, stamens, and pistil. The gametophyte generation, which produces gametes through meiosis, is haploid.
How many chromosomes in a pollen cell?
This is an impossible question to answer the way it is phrased. One needs to know what plant species is being discussed before the question can be answered. Each species will have a unique number of chromosomes and its pollen will have half as many as the parent species.
Is an apple trees cell haploid or diploid?
Apple tree cells are primarily diploid, meaning they contain two sets of chromosomes, one from each parent. This diploid state is typical for most of the plant's somatic cells. However, during the process of reproduction, apple trees produce haploid gametes (pollen and ovules), which contain only one set of chromosomes.
What is the number of chromosomes in the seed of dicotyledon?
It makes no difference if it is monocotyledonous or dicotyledonous; if it is a seed it already has a full compliment of chromosomes and is diploid (2n). Only pollen and ovules are haploid (n)
What percentage of chromosomes would the pollen grain have compared to plant body cells?
A pollen grain typically has half the number of chromosomes compared to the plant's body cells. This is because pollen grains are produced through meiosis, which reduces the chromosome number by half in order to combine with the egg cell during fertilization to produce a diploid zygote.
Which comes first in the sexual reproduction in plants?
In sexual reproduction of plants, pollen is produced first and then transferred to the stigma on the female reproductive structure of the plant. Fertilization occurs when the pollen grain germinates and grows a pollen tube to deliver sperm cells to the ovule, resulting in seed formation.
Is the end product of mitosis haploid or diploid?
Mitosis produces DIPLOID cells- remember in mitosis your INCREASING the number of CELLS but the chromosome number is the SAME as the parentso a parent that has a (DIPLOID number of 10)will produce at the end of mitosis will produce 2 children with a diploid number of (10)That is why Mitosis is CONSERVATIVE.So in actuality, 1 diploid cell will produce 2 diploid cells in mitosisThe above is only true if the starting cell is itself diploid. However there are plenty of instances, especially in plants, in which cells that are haploid (the ones that give rise to pollen and egg, and endosperm nuclei, for example) or multiploid (hexaploid wheat, for example) undergo mitosis, and the cells that are produced have the same ploidy as the starting cell. Always. As noted above, mitosis is conservative. However, you ought not assume that you started with a diploid cell.
Is stigma diploid or haploid?
Diploid
