Double fertilization
Triploid endosperm nucleus is a result of double fertilization in angiosperms, where one sperm fertilizes the egg cell to form the diploid zygote and the other sperm fertilizes the central cell to form the triploid endosperm. The endosperm serves as a nutrient source for the developing embryo.
If the chromosome number of a plant is 16, then the ploidy level of the microspore mother cell would be 2n=16 (diploid) and the endosperm cells would typically be 3n=24 (triploid), as they result from the fusion of a haploid sperm cell and a diploid central cell in double fertilization.
I am sure it is (3n).This is because In angiosperms most common type of embryo sac formation, there is fusion of 1 sperm nuclei + 2 polar nuclei=triple fusion resulting in a triploid primary endosperm nuclues.
An organism with the chromosome designation 3n is called triploid. Triploid organisms have three sets of chromosomes instead of the usual two sets found in diploid organisms. This can lead to infertility and developmental abnormalities in some species.
Meiosis is the process that produces haploid cells from a diploid cell. During meiosis, a diploid cell undergoes two rounds of cell division to form four haploid daughter cells, each containing half the number of chromosomes as the parent cell. This process is essential for sexual reproduction and genetic diversity.
Triploid endosperm nucleus is a result of double fertilization in angiosperms, where one sperm fertilizes the egg cell to form the diploid zygote and the other sperm fertilizes the central cell to form the triploid endosperm. The endosperm serves as a nutrient source for the developing embryo.
Endosperm of gymnosperm is haploid(ploidy n), develop from megaspore (n) before fertilization. ploidy of endosperm in angiosperm is 3n(central cell fused with one male gamete i.e 2n+n).
In double fertilization, one sperm reaches the egg and fertilizes it. This produces a diploid zygote that will grow into the plant embryo. A second sperm fuses with the endosperm nuclei in the embryo sac and produces the triploid endosperm. This will nourish the developing seedling.
If the chromosome number of a plant is 16, then the ploidy level of the microspore mother cell would be 2n=16 (diploid) and the endosperm cells would typically be 3n=24 (triploid), as they result from the fusion of a haploid sperm cell and a diploid central cell in double fertilization.
the end products of double fertilisation are primary endosperm cell and diploid zygote. When two pollen grains are taken by pollen tube and it reaches a ovule in the ovary. One germ cell fuses with egg and form zygote which later develops into embryo and other germ cell fuses with bi-nucleate cell and form primary endosperm cell which later develops into endosperm which provide nutrition to the growing embryo.
I am sure it is (3n).This is because In angiosperms most common type of embryo sac formation, there is fusion of 1 sperm nuclei + 2 polar nuclei=triple fusion resulting in a triploid primary endosperm nuclues.
If the diploid number of the plant is ten, then its haploid number is 5. Since triploid refers to three times the haploid number, then a triploid plant would have 15 chromosomes.
If a diploid number is 42, then the haploid number is 21. A triploid number would be 63. But why would you have the chromosomes from 3 parents combining?
The fusion of a male gamete with secondary nucleus is called double fertilization and it results in the development of endosperm which nourishes the developing embryo inside the seed. Thus without double fertilization nourishment of developing embryo will be hamphered.
24
The embryo and endosperm of the pine nut are diploid. The embryo is formed from the fusion of a male gamete (sperm) and a female gamete (egg), both of which are haploid, resulting in a diploid zygote. The endosperm is also formed from a fusion of a male gamete and a central cell in the female gametophyte.
the diploid produces two haploids