What is a Carposporophyte?

Carposporophyte – formed by the union of haploid gametes in red algae; diploid (2n) stage of the life cycle that is carried by the haploid female gametophyte in the cystocarp; produces carpospores.

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 Polysiphonia cystocarp?

From Wikipedia, the free encyclopedia. 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 Trichoblast Polysiphonia?

The female sex organ of Polysiphonia is called as carpogonium. The carpogonium develops on trichoblast on female gametophytic plant. The trichoblast initial arises from a cell, 2-4 cells behind the apical cell. It develops into 5-7 celled female trichoblast.

What do u mean by Thallus?

Thallus, plant body of algae, fungi, and other lower organisms formerly assigned to the obsolete group Thallophyta. A thallus is composed of filaments or plates of cells and ranges in size from a unicellular structure to a complex treelike form.

What is the life cycle of red algae?

The triphasic life cycle includes an alternation of two diploid or sporophyte generations. There are two diploid phases and one haploid phase. Red algae show a triphasic life cycle. Red algae also called rhodophyta is one of the oldest groups of eukaryotic algae.

Why is Polysiphonia red?

Polysiphonia, a common genus of marine red algae, is red in color because of the pigment phycobilin, which masks the green color of the chlorophyll responsible for photosynthesis.

Where is Chara found?

It is found occasionally in the shallows of slow-flowing rivers and in spring seepage areas and known to grow to depths as great as 12 m (see also Chapter 2, Section II. F-2). Often Chara species have a strong odor, hence its common name in North America of skunkweed or muskweed.

Are the gametes of Polysiphonia Oogamous?

In the red alga Polysiphonia, non-motile eggs are fertilized by non-motile sperm. Sexual reproduction is oogamous type and plants are dioecious i.e., male and female sex organs are produced on different male and female gametophytic plants.

What does thallus like mean?

: a plantlike vegetative body (as of algae, fungi, or mosses) that lacks differentiation into distinct parts (such as stem, leaves, and roots) and does not grow from an apical point.

What is the difference between thallus and thalloid?

In context|botany|lang=en terms the difference between thalloid and thallus. is that thalloid is (botany) of a plant, alga, or fungus lacking complex organization, especially lacking distinct stems, roots, or leaves while thallus is (botany) any plant body lacking vascular tissue.

What food does red algae eat?

They are usually red but some species living high on the intertidal fringe may be olive-brown. Red algae are found in all the regions of the world growing attached to the bottom or other hard surfaces. They are grazed by herbivores such as fish, crustaceans, worms and gastropods.

What’s the real definition of the word insanity?

Insanity: The Real Definition. By Cara Santa Maria. “The definition of insanity is repeating the same mistakes over and over again and expecting different results,” utters the know-it-all guy in the coffee shop offering free “therapy” to his visibly shaken friend.

What kind of structure does a carposporophyte have?

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.

When did the term insanity first appear in print?

The first time it actually appeared in print was in a 1981 Narcotics Anonymous text ( page 11 ). The term insane is outdated parlance in the mental health community. No legitimate medical or clinical professional would be caught dead saying it in public.

Do you think the insanity defense is a common ploy?

Did Nixon really think that the insanity defense is a convenient loophole that allows for the most brilliantly nefarious thespians to malinger their ways out of prison and into, who knows, Hollywood? Do you think that the insanity defense is a common ploy in the courtroom?