Is the archegonium on the sporophyte?
The archegonium also serves as the site of fertilization. After the egg is fertilized, the egg will remain in the archegonium until it develops into a sporophyte. A sporophyte is the spore-producing form of the plant. The archegonium releases the sporophyte once it has fully developed.Nov 1, 2022
Where is archegonium found?
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.
Where is archegonium located?
Archegonia are typically located on the surface of the plant thallus, although in the hornworts they are embedded.
Where are archegonia located on Archegoniophore?
The female gametangiophore is called an archegoniophore; it grows up from the thallus and consists of a stalk and an archegonial head with pendant (hanging) lobes or fingers. On the underside of the head are archegonia, each of which is like an inverted vase and holds a single haploid egg.Mar 2, 2013
Where can antheridium be found?
Antheridia are present in the gametophyte phase of cryptogams like bryophytes and ferns. Many algae and some fungi, for example ascomycetes and water moulds, also have antheridia during their reproductive stages.
Where are the antheridium located?
Male sex organs known as antheridia and female sex organs, which are referred to as archegonia, are typically located at the tips of the main shoots of gametophyte mosses.Nov 13, 2015
Where is the archegonium located?
Archegonia are typically located on the surface of the plant thallus, although in the hornworts they are embedded.
Is archegonium found in angiosperms?
In angiosperms, archegonia and antheridia are absent. So, the correct answer is option D, angiosperms. Note: The archegonia are absent in some higher gymnosperms like Gnetum, Ephedra and Welwitschia etc. The neck canal cells break down and are used to attract the male gamete for the purpose of fertilization.
Where is the archegonium in angiosperms?
Archegonia are typically located on the surface of the plant thallus, although in the hornworts they are embedded.
Do gymnosperms have antheridium and archegonium?
Gymnosperms have archegonia but no antheridia. The plants of this division are heterosporous. While the microspores or pollen grains produce the male gametophyte, the single megaspore within megasporangium (nucellus) develops into a female gametophyte, that bears two or more archegonia or female sex-organs.
Do gymnosperms have archegonia?
In ferns and mosses, archegonium is the female reproductive organ. Some gymnosperms, such as cycads and conifers, have archegonium. It's a flask-shaped structure with a neck and one or more layers of cells, as well as a swelling base—the ventr—that holds the egg.