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a single pollen grain is only one cell.
A mature pollen grain in many plants have two cells as a result of pollen mitosis- 1. the tube cell and 2. the germ cell. The tube cell forms the pollen tube at the time of pollen germination and the germ cell nucleus divides again to form two male gametes.
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What is the main function of the mature gametophyte?
The main function of the mature gametophyte is to produce gametes through mitosis. In plants, the male gametophyte produces sperm cells within the pollen grains, while the female gametophyte produces egg cells within the ovule. The fusion of these gametes during fertilization leads to the formation of a new organism.
Differences between gamete and a gametophyte?
A gamete is a mature reproductive cell (sperm or egg) that fuses with another gamete during fertilization. A gametophyte is a haploid multicellular plant structure that produces gametes through mitosis. Gametes are reproductive cells in animals, while gametophytes are multicellular structures in plants that produce gametes.
What is the number of chromosomes that the gametophytes of angiosperms have cells with nuclei have?
Gametophytes of angiosperms have cells with nuclei that typically contain a haploid number of chromosomes, which is half the number found in somatic cells. This means that gametophyte cells usually have one set of chromosomes.
What is one entire male gametophyte of a gymnosperm?
The male gametophyte of a gymnosperm is a pollen grain, which consists of two cells: a generative cell that will divide to form two sperm cells, and a tube cell that aids in the pollen tube formation.
What are megaspores?
Megaspores are specialized haploid cells produced by seed plants as part of the reproductive process. They develop into female gametophytes that contain egg cells, which are necessary for sexual reproduction in plants. Megaspores are typically produced in the ovules of the plant's reproductive structures.
Name the parts of an angiosperm flower in which development of male and female gametophyte take place?
Parenchyma cells Stamen & pistil
What is the main function of the mature gametophyte?
The main function of the mature gametophyte is to produce gametes through mitosis. In plants, the male gametophyte produces sperm cells within the pollen grains, while the female gametophyte produces egg cells within the ovule. The fusion of these gametes during fertilization leads to the formation of a new organism.
Does the pollen grain contain the egg of an angiosperm?
no the pollen grain contains the male genetic material - sperm cells
Differences between gamete and a gametophyte?
A gamete is a mature reproductive cell (sperm or egg) that fuses with another gamete during fertilization. A gametophyte is a haploid multicellular plant structure that produces gametes through mitosis. Gametes are reproductive cells in animals, while gametophytes are multicellular structures in plants that produce gametes.
What is the number of chromosomes that the gametophytes of angiosperms have cells with nuclei have?
Gametophytes of angiosperms have cells with nuclei that typically contain a haploid number of chromosomes, which is half the number found in somatic cells. This means that gametophyte cells usually have one set of chromosomes.
Does blood contain Mitochondria?
White blood cells have. But erithrocytes lack many
How many cells are there prior to pollination in the female gametophyte of a dicot?
There are seven cells.
Stage in which plant produces sex cells?
gametophyte
Plant stage that produces sex cells?
Gametophyte
Where is location of antheridium on fern gametophyte?
Antheridia in fern gametophytes are typically found on the lower surface of the gametophyte, often near the base of the plant. They are responsible for producing sperm cells which will later fertilize the egg cells within the archegonia.
Do reticulocytes have a nucleus?
No, reticulocytes do not have a nucleus. They are immature red blood cells that still contain some residual RNA when released from the bone marrow. As they mature into erythrocytes (mature red blood cells), the nucleus is extruded.
Do DNA have all cells?
No. Some cells do not in fact have DNA, probably because of the lack of a nucleus. For example, mature red blood cells (erythrocytes) do not contain a nucleus or DNA.
