Difference Between Carposporophyte and Tetrasporophyte

The key difference between carposporophyte and tetrasporophyte is that carposporophyte is a diploid thallus that produces carposporangia containing diploid carpospores while tetrasporophyte is a diploid structure that produces tetrasporangia containing haploid tetraspores. ... Tetraspores grow into gametophytes.

1. What is Carposporophyte?
2. What are Tetraspores in red algae?
3. What is the Cystocarp attached to?
4. Why Polysiphonia is so called?
5. What is Chantransia stage?
6. What is the life cycle of red algae?
7. What is asexual reproduction in algae?
8. What are Hypnospores in algae?
9. Which are the most primitive algae?
10. Where is Cystocarp found?
11. What is the economic importance of red algae?

What is Carposporophyte?

In algae: Reproduction and life histories. …or pustulelike structure called a carposporophyte. The carposporophyte eventually produces and releases diploid carpospores that develop into tetrasporophytes. Certain cells of the tetrasporophyte undergo meiosis to produce tetraspores, and the cycle is repeated.

What are Tetraspores in red algae?

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 Cystocarp attached to?

The zygote grows, still attached to the gametophyte, within a structure called the cystocarp. The cystocarp has an external layer called the pericarp that is formed from the female gametophyte's tissue (meaning it is haploid).

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.

What is Chantransia stage?

It divides transversely for many times to form prostrate filaments. • This stage of thallus resembles to another alga called chantransia. Therefore, this stage of Batrachospermum is called Chantransia stage. • It is juvenile stage. This stage reproduces by formation of monospores.

What is the life cycle of red algae?

Red algae are haplo-diplonts with a complicated life cycle that often involves three phases. Characteristical for Red algae is that no motile stage occurs during the entire life cycle. The spores and gametes are transported by the water in a passive manner. In the sexual reproduction only oogamy is observed.

What is asexual reproduction in algae?

Asexual reproduction is the production of progeny without the union of cells or nuclear material. Many small algae reproduce asexually by ordinary cell division or by fragmentation, whereas larger algae reproduce by spores.

What are Hypnospores in algae?

: a very thick-walled asexual resting spore (as of various green algae)

Which are the most primitive algae?

Blue green algae are the most primitive group of algae.

Where is Cystocarp found?

A cystocarp is the fruiting structure produced in the red algae after fertilization, especially such a structure having a special protective envelope (as in Polysiphonia). The structure from which carpospores are released.

What is the economic importance of red algae?

What is the importance of red algae? Red algae form an important part of the ecosystem and are consumed by various organisms such as crustaceans, fish, worms and even humans. Red algae are also used to produce agar that is used as a food additive. They are rich in calcium and also used in vitamin supplements.