What is antheridium plant?
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.
What is the archegonia in plants?
archegonium, the female reproductive organ in ferns and mosses. An archegonium also occurs in some gymnosperms, e.g., cycads and conifers. A flask-shaped structure, it consists of a neck, with one or more layers of cells, and a swollen base—the venter—which contains the egg.
What is antheridium and example?
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. Androecium is also the collective term for the stamens of flowering plants.
What is the definition of archegonia?
Definition of archegonium : the flask-shaped female sex organ of bryophytes, lower vascular plants (such as ferns), and some gymnosperms.
What is antheridium Class 11?
(ii) Antheridium – It is the male sex organ present in bryophytes and pteridophytes and is surrounded by a jacket of sterile cells. It encloses the sperm mother cells, which give rise to the male gametes.
What is the difference between archegonia and archegonium?
The female sex organ in non-flowering plants is the archegonium, with archegonia being the plural form. The male sex organ in non-flowering plants is called an antheridium.
What is the definition of archegonium?
What is difference between antheridium and archegonium?
Hint: Antheridia is the male sex organ, and is a haploid structure whose function is to produce male gametes called antherozoids or sperms. Archegonia is the female sex organ, which produces female gametes mainly in cryptogams. It is responsible for the production of female gametes that are egg cells or ova.
How will you differentiate between antheridium and archegonium of a plant?
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.
What is moss antheridium?
Reproduction of mosses, an advanced group of the green seedless plants known as Bryophytes, may take many forms. New plants may develop through branching, fragmentation, regeneration, or production of spores.
Is an antheridium a gametophyte or sporophyte?
The female sex organ in non-flowering plants is the archegonium, with archegonia being the plural form. The male sex organ in non-flowering plants is called an antheridium. A gametophyte is the haploid gamete-producing form of a plant, while a sporophyte is the spore-producing form of the plant.
Is an antheridium a sporophyte?
The male sex organ in non-flowering plants is called an antheridium. A gametophyte is the haploid gamete-producing form of a plant, while a sporophyte is the spore-producing form of the plant.
What is the difference between Oogonium and antheridium?
Sexual reproduction starts with the development of special hyphae from either one of two types of mating strains. The “male” strain produces an antheridium (plural: antheridia) and the “female” strain develops an ascogonium (plural: ascogonia).
What is the meaning of antheridium?
Definition of antheridium. : the male reproductive organ of some cryptogamous plants.
What is a liverwort antheridium?
Here, the diagram of a liverwort antheridium is shown. 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.
What is the function of antheridia?
An organ in certain organisms that produces male gametes. Antheridia are found in many groups of organisms, including the bryophytes, ferns, ascomycete fungi, and some algae. Most gymnosperms and all angiosperms, however, have lost the antheridium, and its role is filled by the pollen grain.
What is the difference between antheridia and antheridiophore?
In some bryophytes, the antheridium is borne on an antheridiophore, a stalk-like structure that carries the antheridium at its apex. “Moss flowers”: each shoot has a cluster of antheridia, i.e., an androecium.