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 ]

The male sex organ, the antheridium, is a saclike structure made up of a jacket of sterile cells one cell thick; it encloses many cells, each of which, when mature, produces one sperm. The antheridium is usually attached to the gametophyte by a slender stalk.

2019年11月18日 · The main difference between antheridium and archegonium is that antheridium is the haploid structure producing male gametes in cryptogams such as ferns and bryophytes, whereas archegonium is the multicellular structure producing female gametes in both cryptogams and gymnosperms.

The meaning of ANTHERIDIUM is the male reproductive organ of some cryptogamous plants.

2018年5月29日 · *antheridium* (pl. antheridia) The male sex organ of algae, fungi, bryophytes, clubmosses, horsetails, and ferns. It produces the male gametes (antherozoids).

2025年1月8日 · Fern - Sporangia, Gametophytes, Alternation: The sex organs of ferns are the antheridium and the archegonium. Within the archegonial venter the zygote undergoes cell divisions to form the embryo, which usually has a development distinctive to ferns.

The most distinct region of the antheridium was the sperm filament that included as many as 25–40 sperm cell initials attached end to end (Fig. 5A). Each cell was surrounded by a cell wall, and the cross-walls between the sperm cell initials were perforated by …

This process involves the division and differentiation of cells within the antheridium, leading to the formation of mature sperm cells. The sperm cells are typically flagellated, allowing them to swim through water or moist environments to reach the female gametangia for fertilization.

2021年12月9日 · The antheridium primordium is formed from the mitotic plane, obliquely introduced at the upper end of the cells near the spore shell of the protonema , and comprises three jacket cells (basal cells, ring cells, and apical cap cells) that surround 16 or 32 sperm cells.

antheridium (pl. antheridia) the male sex organ of bryophytes, pteridophytes, algae and fungi.