Admin Table of Contents
Is archegonium a gametophyte or Sporophyte?
ἀρχή
An archegonium (pl: archegonia), from the ancient Greek ἀρχή (“beginning”) and γόνος (“offspring”), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium.
Is the archegonium male or female?
archegonium, the female reproductive organ in ferns and mosses.
What kind of cell division occurs in archegonium?
Male gametophytes develop reproductive structures called antheridia (singular, antheridium) that produce sperm by mitosis. Female gametophytes develop archegonia (singular, archegonium) that produce eggs by mitosis.
What type of gametes are produced in archegonia?
The gametophyte produces structures known as antheridia and archegonia, which produce the male and female gametes respectively. Collectively these structures are known as gametangia.
Is the archegonium haploid?
In humans, the egg and sperm cells are haploid. Haploid sperm are released from the antheridia and when a haploid sperm reaches a haploid egg in an archegonium the egg is fertilized to produce a diploid cell.
Is archegonium of Cycas haploid or diploid?
Archegonium is the female reproductive organ which is found in ferns, mosses, and various gymnosperms. It is also haploid in nature which fuses with the haploid male gametophyte to produce a diploid offspring. It is diploid in nature.
Are archegonia diploid?
BEYOND. Deep in the BEYOND, the sperm encounter the female sex organ, the archegonium. Inside the archegonium, one sperm and one egg fuse to form a diploid zygote.
Are archegonia asexual?
Lesson Summary Asexual reproduction is when an organism makes a copy of itself without exchanging genes, while sexual reproduction is the creation of an offspring by the mixing of male and female gametes. The female sex organ in non-flowering plants is the archegonium, with archegonia being the plural form.
Is the cell produced by archegonium haploid or diploid?
The male and female sex organs, the antheridia and the archegonia respectively, are produced on the gametophytic plants. Haploid sperm are released from the antheridia and when a haploid sperm reaches a haploid egg in an archegonium the egg is fertilized to produce a diploid cell.
Is the archegonia and antheridia haploid or diploid?
produced in archegonia (sing., archegonium), and sperm are produced in antheridia (sing., antheridium). These haploid gametes are formed by mitosis. The gametes fuse, usually by the entrance of the sperm into the archegonium, forming a diploid zygote, the first stage of the diploid sporo- phyte generation.
Which of the following has archegonia ovule?
Cycas
An ovule of Cycas has archegonia.
What is the ploidy level of the sporangium?
2n
Because it is a sporophyte organ, the sporophyll is diploid (2n). The sporophyll grows clusters of specialized 2n structures called sporangia.