Question

what is stamen tell me plz?

Answer 1

Stamen, the male reproductive part of a flower. In all but a few extant angiosperms, the stamen consists of a long slender stalk, the filament, with a two-lobed anther at the tip. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination. Small secretory structures, called nectaries, are often found at the base of the stamens; they provide food rewards for insect and bird pollinators. All the stamens of a flower are collectively called the androecium. For a discussion of the female reproductive parts of a flower, see pistil.

how flowering plants reproduce
crocus
pistil
how flowering plants reproduce
Reproduction in flowering plants begins with pollination, the transfer of pollen from anther to stigma on the same flower or to the stigma of another flower on the same plant (self-pollination) or from the anther on one plant to the stigma of another plant (cross-pollination). Once the pollen grain lodges on the stigma, a pollen tube grows from the pollen grain to an ovule. Two sperm nuclei then pass through the pollen tube. One of them unites with the egg nucleus and produces a zygote. The other sperm nucleus unites with two polar nuclei to produce an endosperm nucleus. The fertilized ovule develops into a seed.
Encyclopædia Britannica, Inc.
crocus
Close-up of a spring crocus (Crocus vernus). The flower's three pollen-covered stamens are clearly visible.
© Bill Guerriero
pistil
Lily with a pistil surrounded by stamens.
iStockphoto/Thinkstock

The number and arrangement of stamens, as well as the way in which the anthers release pollen, are important taxonomic characteristics for many flowering plants. The number of stamens is often the same as the number of petals. The presence of numerous stamens is common in many plant families (e.g., Cactaceae, Ranunculaceae, and Rosaceae); most orchids possess only one stamen. In plants with imperfect (unisexual) flowers, the staminate flowers may be borne individually, as in most squash species, or arranged in long clusters known as catkins, as is characteristic of oaks and willows. While the anthers of most angiosperms release pollen through a rupture along one side of each sac, the anthers belonging to members of the heath family (Ericaceae) release pollen through small pores at the anther tip. Some flowers produce sterile stamens, known as staminodes, which may be showy (e.g., on the cannonball tree) or inconspicuous (e.g., in Penstemon species).

hibiscus
A drooping male catkin (left) and the small red female inflorescence (right) of hazel (Corylus avellana).
fritillary
hibiscus
The pollen-bearing stamens (male structures) of a hibiscus flower, borne on the pistil (female structure). This unusual arrangement is common among members of the family Malvaceae.
Goodshoot/Thinkstock
A drooping male catkin (left) and the small red female inflorescence (right) of hazel (Corylus avellana).
© Richard Packwood/Oxford Scientific Films
fritillary
Time-lapse video, filmed over three days, of a snake's head fritillary (Fritillaria meleagris) flower. The stamens open sequentially to reveal the pollen.
Video by Neil Bromhall; music, Telemann Trio/Musopen.org
Melissa Petruzzello
LEARN MORE in these related Britannica articles:

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…petals, one whorl of five stamens, often another whorl of five stamens, and finally a whorl of three…
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…bases of the perianth and stamens (apple, pear, aster); the blossom seems to arise upon or above the…
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MORE ABOUT Stamen
13 REFERENCES FOUND IN BRITANNICA ARTICLES
Assorted References

component of flower
In flower
In plant: Flowers
structure and function in plant reproduction
In plant reproductive system: Angiosperms
In pollination
anatomy of

angiosperms
In angiosperm: General features
In angiosperm: Eudicots
Malvales
In Malvales: Common characteristics
Fabales
In Fabales: Characteristic morphological features
In Fabales: Classification of Fabaceae
In Fabales: Classification of Fabaceae

Answer 2

Stamen are androecium parts of the flower. Each stamen consist of threadlike filament and bilobed anther
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