Gemma cups, which are asexual reproductive structures found in some liverworts, are typically haploid (1n). This means they contain one set of chromosomes, as they develop from haploid gametophyte tissue. Upon germination, the gemmae can give rise to new gametophytes, continuing the life cycle of the plant.
23
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).
3n
Definition Ploidy analysis is a test that measures the amount of DNA in tumor cells. It is also called DNA ploidy analysis. Purpose DNA ploidy analysis is used in addition to the traditional grading system as another way to evaluate how malignant a tumor might be. The advantage of this test is that it provides a numeric, and therefore objective, evaluation of how aggressive the cancer might be. Because this test was relatively new in 2001, and the significance of information gained by this test was not completely understood, this test had not yet replaced traditional systems of tumor grading. It would be used only to supplement those tests in order to give the doctor as much information about the nature of the tumor as possible. Doctors may also use this test to help predict how a tumor may respond to the planned therapy.from= Ploidy analysis =
2n
23
A zygote is a diploid
The micropyle is a hole in the seed coat, it is literally nothing. Hence it is not made of cells and has no chromosomes.
The ploidy level of a seed coat is typically diploid, meaning it contains two sets of chromosomes. This allows the seed coat to develop and protect the seed embryo inside during germination and growth.
Gemma cups in Marchantia, a type of liverwort, serve as reproductive structures that facilitate asexual reproduction. They contain gemmae, which are small, multicellular propagules that can detach and grow into new individual plants when conditions are favorable. This allows Marchantia to rapidly colonize its environment and helps in the dispersal of the species. Additionally, gemma cups contribute to the overall survival and resilience of the plant in varying habitats.
Generally, a somatic cell in a human body has 46 chromosomes, which are two complete sets of 23 chromosome pairs. Because they have two sets, these cells have a ploidy level of diploid.
You need to be at least level 15
PEN, or pollen tube, typically has a haploid ploidy level (n), as it develops from the haploid pollen grain during fertilization in flowering plants. The pollen grain itself originates from the male gametophyte, which undergoes meiosis to produce haploid cells. Therefore, the ploidy of PEN is haploid, containing one set of chromosomes.
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).
2n
3n
Its Hexaploid