During the gametophyte generation, a green alga: A. has the haploid number of chromosomes. B. has the diploid number of chromosomes. C. reproduces asexually. D. develops from a zygote.
2007-11-09 07:02:12 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Botany
a.. A haploid algae of the gametophyte generation produces gametes by mitosis. The haploid gametophyte generation produces haploid gametes (eggs and sperm), which unite to form a diploid zygote.
2007-11-09 07:37:53 · answer #1 · answered by ATP-Man 7 · 0⤊ 0⤋
Spores don't fuse to make a diploid zygote they kind of pause for a while as a haploid muticellular organism called the gametophyte generation.
Then the haploid gametophyte generation generates haploid gametes. This is not asexual even though it remains haploid. This is not a cellular division to create an identical daughter cell. The gamete is a single cell created by a muticellular gametophyte through mitosis.
The sporophyte generation developes from a zygote formed from two gametes fusing.
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
I hope this covered what was confusing.
2007-11-09 08:07:40 · answer #2 · answered by gardengallivant 7 · 0⤊ 0⤋