how can u tell if a generation stage is gametophyte, sporophyte, haploid, diploid, by what process they are produced (mitosis/meiosis)
2007-12-01 11:52:58 · 5 answers · asked by star baller 360 5 in Science & Mathematics ➔ Biology
that would be somewhat dependent upon the phyla (division) of plant you are looking at. simple plants like moss have a gametophytic(haploid)stage of life where it is the most visble and long lasting stage whereas the sporophytic stage(diploid) is the most common stage for higher level plants like angiosperms. the gametophyte replicates via mitosis whereas the sporophytic stage produces haploid cells via meiosis. you should look at the reproductive cycles of mosses and flowering plants in your text book and these terms will easily be seen in the accompaning diagrams.
2007-12-01 12:04:26 · answer #1 · answered by gungadin 4 · 1⤊ 0⤋
If you are asking about a specific organism then each stage has a characteristic morphology.
Moss sporophytes cannot live independent of the gamtophyte from which they grow. This is one way in which bryophytes differ from all other land plans. The mature sporophyte is composed of a "foot" (that remains stuck in the gametophyte) a long stalk and a capsule that looks like a salt shaker. Inside the capsule, haploid spores are produced by meiosis. When the capsule ripens, special pores- and in some cases the whole top of the capsule - open. The spores are shaken out, to be carried off by wind and water.
The sporophyte generation produces spores. Sporophytes make spores by meiosis. Spores grow into haploid (1n) gametophytes.
Now the gametophyte generation generates gametes. Gametophytes generate gametes by mitosis. Two gametes fuse into a zygote (2n) and grow into a sporophyte (2n).
When you see moss you see the green gametophyte. Sometimes it has fine taller stems projecting above the carpet. Those are the sporophyte stems and capsules.
Diploid begins with di meaning two while haploid begins with ha with no obvious numerical value. The prefix is actually haplo or single.
ploidy = n
Diploid = 2n
haploid or monoploid = n
2007-12-01 12:22:57 · answer #2 · answered by gardengallivant 7 · 0⤊ 0⤋
Are you telling us that you didn't open up Google once, to try and find an example?
2016-04-07 02:31:37 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I have no idea
2007-12-01 12:01:12 · answer #4 · answered by rosey 1 · 0⤊ 0⤋
you have to lick it!
2007-12-01 11:58:59 · answer #5 · answered by Anonymous · 1⤊ 0⤋