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What is the relationship between the number of cells within an embryo sac and the number of nuclei within the embryo sac?
The number of cells within an embryo sac is typically equal to the number of nuclei within the embryo sac. This is because each cell of the embryo sac contains one nucleus, and during the process of embryo sac development, the number of cells and nuclei increase concurrently.
How are the embryo and the endosperm formed?
The embryo is formed through fertilization of the egg cell by the sperm cell. This union creates a zygote that develops into the embryo. The endosperm, on the other hand, is formed through the fusion of a sperm cell with two polar nuclei in the embryo sac of a plant.
During embryo sac formation what happens?
During embryo sac formation in plants, the megaspore mother cell undergoes meiosis to produce four haploid cells. One of these cells develops into the embryo sac, which contains the egg cell, central cell, and other supporting cells. The embryo sac is a crucial step in the development of the female gametophyte in plants.
Where does the endosperm come from in a plant and what is its purpose?
the endosperm is in the gymnosperm 'naked seeds' and the angiosperm flowering plants. in gymno - haploid (n) gives nutrients to the embryo the only difference with the angiosperm is that its not haploid (n) but triploid (3n)
What is a fluid-filled sac that surrounds an embryo?
A fluid-filled sac that surrounds an embryo is called an amniotic sac. This sac contains amniotic fluid, which provides protection and cushioning for the developing embryo.
What is the relationship between the number of cells within an embryo sac and the number of nuclei within the embryo sac?
The number of cells within an embryo sac is typically equal to the number of nuclei within the embryo sac. This is because each cell of the embryo sac contains one nucleus, and during the process of embryo sac development, the number of cells and nuclei increase concurrently.
Is pollar nuclei a haploid or a diploid?
Polar nuclei are typically haploid. In the context of plant reproduction, specifically within the embryo sac of angiosperms, polar nuclei are formed from the fusion of two haploid nuclei. These nuclei eventually contribute to the formation of the triploid endosperm when fertilization occurs.
How are the embryo and the endosperm formed?
The embryo is formed through fertilization of the egg cell by the sperm cell. This union creates a zygote that develops into the embryo. The endosperm, on the other hand, is formed through the fusion of a sperm cell with two polar nuclei in the embryo sac of a plant.
What contains the embryo sac?
The embryo sac is contained within the ovule of seed plants. It is a female gametophyte that typically contains seven cells, including one egg cell, two synergids, three antipodal cells, and one central cell with two polar nuclei. This structure plays a crucial role in fertilization and the development of seeds. After fertilization, the embryo sac develops into the seed, containing the embryo and stored nutrients.
What contains a embryo sac of a flower?
The embryo sac of a flower contains the female gametophyte, which typically consists of seven cells: one egg cell, two synergids, three antipodal cells, and one central cell containing two polar nuclei. The egg cell is involved in fertilization, while the synergids assist in guiding the pollen tube. The central cell, when fertilized, develops into the endosperm, which nourishes the developing embryo. Overall, the embryo sac plays a crucial role in sexual reproduction in flowering plants.
Before fertilisation poloidy of secondary nucleus in embryosac.?
The second male gamete fuses with secondary nucleus (definitive), i.e the nucleus formed by the fusion of the polar nuclei and forms the endosperm nucleus which is the poloidy of the embryo sac.
During embryo sac formation what happens?
During embryo sac formation in plants, the megaspore mother cell undergoes meiosis to produce four haploid cells. One of these cells develops into the embryo sac, which contains the egg cell, central cell, and other supporting cells. The embryo sac is a crucial step in the development of the female gametophyte in plants.
What is the protective sac around the developing embryo or fetus is the?
The protective sac around the embryo or fetus is the amniotic sac.
What is the fate of embryo in the embryo sac?
no
Where does the endosperm come from in a plant and what is its purpose?
the endosperm is in the gymnosperm 'naked seeds' and the angiosperm flowering plants. in gymno - haploid (n) gives nutrients to the embryo the only difference with the angiosperm is that its not haploid (n) but triploid (3n)
What is a fluid-filled sac that surrounds an embryo?
A fluid-filled sac that surrounds an embryo is called an amniotic sac. This sac contains amniotic fluid, which provides protection and cushioning for the developing embryo.
The protective sac surrounding the embryo is formed by the?
The protective sac surrounding the embryo is formed by the amniotic membrane and the amniotic fluid which together create the amniotic sac. This sac serves to cushion and protect the developing embryo during pregnancy.
