PLZ REPLY IMMEDIATELY
2007-03-05 08:58:43 · 2 answers · asked by frd_for_frdship 1 in Science & Mathematics ➔ Botany
I can tell you alot of things but what are you looking for specifically?
heres a run down....
A microsporangium develops in the anther (male part of plant) It then divides by meiosis to form a tetrad (4) of haplois microspores (n). Each new cell then divides again by mitosis. But instead of making 2 new seperate cells.... it is actually 2 nucleuses in one cell covering. So you have a tube nucleus and a generative cell all in one ! (The whole thing is now called a tube cell.) One of the nucleuses...The tube nucleus goes on to form the pollen tube. The other nucleus then divides by mitosis (still inside the same cell as the tube nucleus) and forms the 2 sperm cells. This is the pollen tube or the mature microgametophyte!
Thats the best description I can give and it pretty much covers everything! Hope that helps! :-D
Ps - the ecolink guy - his diagram is of the "female" egg cycle formation....
2007-03-05 09:08:01 · answer #1 · answered by Fox_747 2 · 0⤊ 0⤋
Refer to this diagram:
http://trc.ucdavis.edu/biosci10v/bis10v/week8/flower2.gif
2007-03-05 17:09:48 · answer #2 · answered by ecolink 7 · 0⤊ 1⤋