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How many cells does a mature male gametophyte have in an angiosperm contain?
Wiki User
∙ 10y ago
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.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agotwo
based on "This structure is called the pollen grain. The smaller generative cell divides mitotically (either now or later) to produce two sperm. The two sperm are located inside the pollen tube." - Inquiry into Life : 11th edition; page 179
Wiki User
∙ 15y agoOne. Microsporogenesis is completed with the formation of the single-celled microspores also known as pollen grains.
Wiki User
∙ 12y agoDepends on the species of the plant you are inquiring about.
Wiki User
∙ 10y agoa germinated pollen grain with a vegetative nucleus and two sperm nuclei
Wiki User
∙ 12y ago2 sperm cells or male gametes contribute in the process of sexual reproduction in angiosperms. One fuses with the female gamete and the other with two antipodal cells.
Wiki User
∙ 11y ago6
Wiki User
∙ 11y ago2
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During alternation of generations cells reproduce by what?
both meiosis and mitosis.
What do gametophyte produce during a plant life cycle?
The gametophyte produces gametes.
What are 2 kinds of sex cells that a gametophyte produces?
sperm cell and egg cells
Where are a plants sperm cells located before fertilization occurs?
When a pollen grain is immature male gametophyte, it has two cells ,a generative cell and a tube cell. A pollen grain becomes a mature male gametophyte when the generative cell divides by mitosis to form two sperm cells. In most species, this process occures after the pollen grain lands on the stigma of a carpel and the pollen tube begins to form. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
What organisms have cells without nuclei?
Cells that do not contain a "true" nucleus are called prokaryotes. Sometimes eukaryotic cells are anucleate(no nucleus) when mature. Erythrocytes (red blood cells) in mammals are an example of eukaryotic cells that do not contain a nucleus when mature.
Name the parts of an angiosperm flower in which development of male and female gametophyte take place?
Parenchyma cells Stamen & pistil
Does the pollen grain contain the egg of an angiosperm?
no the pollen grain contains the male genetic material - sperm cells
During alternation of generations cells reproduce by what?
both meiosis and mitosis.
How many cells are there prior to pollination in the female gametophyte of a dicot?
There are seven cells.
Plant stage that produces sex cells?
Gametophyte
Stage in which plant produces sex cells?
gametophyte
Which molecule doesn't contain DNA?
If you mean which cell doesn't contain DNA, mature red blood cells don't. They expel their nucleus once they mature, kicking out all the DNA it contains.
What do gametophyte produce during a plant life cycle?
The gametophyte produces gametes.
What are 2 kinds of sex cells that a gametophyte produces?
sperm cell and egg cells
Where are a plants sperm cells located before fertilization occurs?
When a pollen grain is immature male gametophyte, it has two cells ,a generative cell and a tube cell. A pollen grain becomes a mature male gametophyte when the generative cell divides by mitosis to form two sperm cells. In most species, this process occures after the pollen grain lands on the stigma of a carpel and the pollen tube begins to form. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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.
What term best describes the cells in the gametophyte stage?
Haploid
