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If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be
[1997]
- a)haploid
- b)triploid
- c)tetraploid
- d)pentaploid
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
If an angiospermic male plant is diploid and female plant tetraploid, ...
The male gamete will be haploid (n). 2 polar nuclei will be diploid (2n). Endosperm formed by fusion of male gamete with two polar nuclei will be pentaploid.
Most Upvoted Answer
If an angiospermic male plant is diploid and female plant tetraploid, ...
Ploidy refers to the number of sets of chromosomes present in a cell. Angiosperms are flowering plants that reproduce sexually, and their reproductive structures include male and female gametophytes. The male gametophyte (pollen) is usually haploid, while the female gametophyte (embryo sac) can be haploid or diploid, depending on the species.
In the given scenario, the male plant is diploid (2n) and the female plant is tetraploid (4n). When the pollen from the male plant fertilizes the ovules of the female plant, the resulting zygote will be triploid (3n) because it contains one set of chromosomes from the male parent and two sets from the female parent.
The endosperm is a tissue that develops in the seeds of flowering plants and provides nutrients to the growing embryo. It is usually triploid (3n) because it is formed by the fusion of one sperm nucleus with two polar nuclei in the female gametophyte. However, in the given scenario, the female gametophyte is tetraploid (4n), so the endosperm will be pentaploid (5n) because it will contain three sets of chromosomes from the female parent and one set from the male parent.
Therefore, the correct answer is option D (pentaploid).
In the given scenario, the male plant is diploid (2n) and the female plant is tetraploid (4n). When the pollen from the male plant fertilizes the ovules of the female plant, the resulting zygote will be triploid (3n) because it contains one set of chromosomes from the male parent and two sets from the female parent.
The endosperm is a tissue that develops in the seeds of flowering plants and provides nutrients to the growing embryo. It is usually triploid (3n) because it is formed by the fusion of one sperm nucleus with two polar nuclei in the female gametophyte. However, in the given scenario, the female gametophyte is tetraploid (4n), so the endosperm will be pentaploid (5n) because it will contain three sets of chromosomes from the female parent and one set from the male parent.
Therefore, the correct answer is option D (pentaploid).
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Community Answer
If an angiospermic male plant is diploid and female plant tetraploid, ...
2polar nuclei of 2n ploidy and one of n ploidy together form 5n ploidy
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If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be[1997]a)haploidb)triploidc)tetraploidd)pentaploidCorrect answer is option 'D'. Can you explain this answer?
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