What are the antheridia and Oogonia?
What are the antheridia and Oogonia?
…the male gametangia are called antheridia and the female oogonia or archegonia. A female gametangium with a sterile cellular jacket is called an archegonium, although, like an oogonium, it produces eggs. In most of the plants dealt with in this article, the eggs are produced in archegonia and the sperms…
Is an antheridium a 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.
What is the name of plant which make the antheridium?
Antheridia are found in bryophytes and ferns which belong to the category cyptogams. These represent the plants that reproduce via spores rather than through seeds and pollen.
What is an oogonium?
Definition of oogonium 1 : a female sexual organ in various algae and fungi that corresponds to the archegonium of ferns and mosses. 2 : a descendant of a primordial germ cell that gives rise to oocytes.
What is difference between antheridium and Ascogonium?
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 are Antheridiophores and Archegoniophores?
Sexual reproduction involves sperm from antheridia on the male plant fertilizing an ovum (egg cell) in the archegonium of a female plant. The antheridia and archegonia are borne atop special gametophore stalks called antheridiophores and archegoniophores, respectively.
What is an Antherozoid?
Definition of antherozoid botany. : a motile male gamete : spermatozoid.
What is the relationship between an antheridium and an Antheridiophore?
In some bryophytes, the antheridium is borne on an antheridiophore, a stalk-like structure that carries the antheridium at its apex.
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 oogonia and oogonium?
An oogonium (plural oogonia) is a small diploid cell which, upon maturation, forms a primordial follicle in a female fetus or the female (haploid or diploid) gametangium of certain thallophytes.
What is the meaning of Ootid?
Definition of ootid : an egg cell that results from the second meiotic division of an oocyte and that develops into a mature egg.