What does Tetraspore mean?
: one of the four haploid asexual spores developed meiotically in the red algae.
What is the nature of Tetraspore?
Tetraspores are red algae spores produced by the tetrasporophytic (diploid) phase in the life history of algae in the Rhodophyta as a result of meiosis. The name is derived from the 4 spores that form after this meiosis, the division is of three kinds: cruciate, zonate and tetrahedral.
What is the ploidy level of Tetraspore?
life cycle of red algae Following meiosis, four haploid tetraspores are produced, which germinate to produce either a male or a female gametophyte.
How are tetraspores formed?
tetraspore Any one of four spores produced by meiosis in an independent diploid sporophyte (tetrasporophyte) in the life cycle of certain red algae. The tetraspores are produced within a tetrasporangium and germinate to produce the sexual haploid generation. The tetrasporophyte develops from a carpospore.
What is Tetra Spore?
/ (ˈtɛtrəˌspɔː) / noun. any of the asexual spores that are produced in groups of four in the sporangium (tetrasporangium) of any of the red algae.
What are Carpogonia give example?
: the egg-bearing portion of the female reproductive organ in some red algae.
What is Tetra spore?
What is the meaning of Carpogonium?
What is a gametophyte simple definition?
gametophyte, in plants and certain algae, the sexual phase (or an individual representing the phase) in the alternation of generations—a phenomenon in which two distinct phases occur in the life history of the organism, each phase producing the other. The nonsexual phase is the sporophyte.
What is meant by Megasporogenesis?
Megasporogenesis refers to the development of megaspores from the megasporocyte, the cell that undergoes meiosis. Meiosis of the megasporocyte nucleus results in the formation of four haploid megaspore nuclei.
Why Polysiphonia is so called?
The genus Polysiphonia derives its name from the polysiphonous nature of its thallus. The central siphon is surrounded by 4–24 pericentral siphons. Polysiphonia is commonly found as an epiphyte on plants and lithophyte on rocks in brackish estuaries in the intertidal and sublittoral regions.