where can i find life cycle of Chara(stone wort) on internet?

Question

plz give the name of the site.

Answer 1

Good Question - I couldn't find one, either. I did find a description from an old text book:

"Reprodution in the Charophyta (Chara is in this group) is strictly oogamous, and the gametes are produced in specialized complex structures usually called antheridia and oogonia . . . Some species are dioecous, while others are monoecious. The reproductive structures are borne on the leaves. . . The mature male reproductive organ consists of chains of colorless cells, each of which produces a single sperm, surrounded by several types of sterile accessory cells; the whole structure is stalked. . . A single biflagellate sperm emerges through a pore in the wall of each antheridial cell at maturity. . . [the female organ] consists of a fertile cell, the oogonium proper, surrounded by spirally elongate sterile cells, the tube cells. The single large egg is uninucleate and contains abundant starch grains.
After fertilization, the zygote develops a thickened wall, and the oogonium is abscised from the leaf. The inner walls of the tube cells also thicken and persist as spiral marking on the dormant zygote.
After a period of dormancy, which is probably followed by meiosis, the zygote germinates into a juvenile plantlet . . . "

The big step forward with this group, evolutionarily, is the sterile jacket of cells surrounding and protecting the oogonium. Also, the gametophyte hold onto, or retains, the zygote for a good bit of time, until it thickens up and falls off to over-winter.

Sorry for any typos. Hope this helps!

Answer 2

Fun search!!

"Sexual reproduction in this class, as in Chlorophyceae, is characterized by the formation of a zygospore and zygotic meiosis. Unlike in the other two common classes of green algae, but as with plants, the nuclear envelope disintegrates when mitosis begins. During cell division the mitotic spindle is present; in some a phragmoplast similar to those seen in plants aids in the formation of a cell plate. "

Hope this helps.

Answer 3

My existence isn't wasted on the internet because of the fact I even have the internet for somebody else. i'm going to bypass the time on the internet and that's my employer. My existence is otherwise finished. No different clarification will settle for if by threat you're fishing for suggestion.