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Gametes are the mature sperm and egg cells. The ovary contains partially developed egg cells and each month one or more complete their development. Human ovaries produce all the immature eggs prior to birth of the female.
In the testicles of males there is a population of sperm stem cells that are able to divide, producing a cell that can complete development (more mitosis and then meiosis) and a cell that remains as a stem cell (capable of dividing again and again).
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Is selaginella a homosporous or a heterosporous plant?
Selaginella is a heterosporous plant, meaning it produces two types of spores – megaspores and microspores. Megaspores develop into female gametophytes, while microspores develop into male gametophytes.
Where are the gametophytes of gymnosperms found?
The gametophytes of gymnosperms are found within the reproductive structures of the plant, such as the male cones for the pollen-producing male gametophytes and the ovules for the egg-producing female gametophytes.
What do gametophytes produce?
Gametophytes go through mitosis to create gametes (pollen in male gametophyte and egg in female gametophyte)
Male gametophytes of flowering plants?
Male gametophytes of flowering plants, also known as pollen grains, are produced in the anthers of the flower. These gametophytes contain the male sperm cells and are dispersed by wind, water, or pollinators to reach the female reproductive structure of the plant. Once a pollen grain lands on the stigma of a flower, it germinates and grows a tube to deliver the sperm cells to the ovules for fertilization.
Do vascular plants produce antheridia and archegonia on the same gametophyte?
Only in those cases where spores are not differentiated into micro- & megaspores for developing the gametophytes. Thus homosporous vascular plants produce archegonia and antheridia on same gametophyte.
Do gametophytes produces seeds or pollen?
Gametophytes produce pollen, which is the male gametophyte. Seeds are produced by the fertilization of the female gametophyte by pollen.
Are the male and female gametophytes separate plants or part of the same plant?
Male and Female gametophytes are in separate plants
Is selaginella a homosporous or a heterosporous plant?
Selaginella is a heterosporous plant, meaning it produces two types of spores – megaspores and microspores. Megaspores develop into female gametophytes, while microspores develop into male gametophytes.
In seed plants what do female gametophytes produce?
egg
What type of spores do selanginella produces?
Selaginella plants produce spores called microspores and megaspores. Microspores give rise to male gametophytes, while megaspores develop into female gametophytes. These spores are produced in sporangia located on the underside of their reproductive structures called strobili.
Which female structure produces the eggs?
Fallopian tube
What kind of plant structure does meiosis produce in seedless plants?
Meiosis in seedless plants produces spores, which are haploid reproductive cells that can grow into multicellular haploid organisms called gametophytes. These gametophytes eventually produce gametes for sexual reproduction.
Where are the female gametophytes produced in non vascular plants?
antheridium
What produces eggs and sperm cells during the life cycle of a plant?
gametophytes
Flower structure containing one or more ovules?
The flower structure containing one or more ovules is the ovary. Ovules are located within the ovary and are potential seeds that develop into fruits after fertilization. The ovary is the female reproductive organ of the flower and plays a crucial role in seed production.
Where are the gametophytes of gymnosperms found?
The gametophytes of gymnosperms are found within the reproductive structures of the plant, such as the male cones for the pollen-producing male gametophytes and the ovules for the egg-producing female gametophytes.
What flowering plants becomes the female gametophyte?
In flowering plants, megaspores become the female gametophytes.
