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An antheridium is a haploid structure or organ producing and containing male gametes (called antherozoids or sperm). The plural form is antheridia , and a structure containing one or more antheridia is called an androecium . [ 1 ]
Anthidium is a genus of bees often called carder or potter bees, who do not cut leaves, but use conifer resin, plant hairs, mud, or a mix of them to build nests.Like other members of the family Megachilidae (most of which are called "leafcutter bees"), they are solitary bees with pollen-carrying scopa that are only located on the ventral surface of the abdomen (other bee families have pollen ...
As it approaches a mate, a haploid sac fungus develops one of two complementary organs, a "female" ascogonium or a "male" antheridium. These organs resemble gametangia except that they contain only nuclei. A bridge, the trichogyne forms, that provides a passage
Once the sperm has matured, the sperm requires water, such as raindrops, to help carry the sperm from an antheridium to an egg located in an archegonium on a female gametophyte shoot. The perigonium structure is composed of an antheridium, paraphyses (sterile filaments that support the reproductive structure of bryophytes), [14] and perigonial ...
The corresponding male organ is called the antheridium. The archegonium has a long neck canal or venter and a swollen base. The archegonium has a long neck canal or venter and a swollen base. Archegonia are typically located on the surface of the plant thallus , although in the hornworts they are embedded.
An immobile egg, contained in the archegonium, fuses with a mobile sperm, released from an antheridium. The resulting zygote is either male or female. A male zygote develops by mitosis into a microsporophyte, which at maturity produces one or more microsporangia. Microspores develop within the microsporangium by meiosis.
The female organs are known as archegonia (singular archegonium) and the male organs are known as antheridia (singular antheridium). Both kinds of organs develop just below the surface of the plant and are only later exposed by disintegration of the overlying cells.
The archegonia are small flask-shaped clumps of cells with an open neck (venter) down which the male sperm swim. The male organs are known as antheridia (sing. antheridium) and are enclosed by modified leaves called the perigonium (pl. perigonia). The surrounding leaves in some mosses form a splash cup, allowing the sperm contained in the cup ...