Saturday, December 8, 2007

Concept 29.2

I. Identify three derived traits that distinguish plants from charophyceans and facilitate life on land. Explain.

a) They have walled spores that are toughened by sporopollenin. They have multicellular, dependent embryos. And they have cuticle. All of which prevents land plants from drying out.

II. Identify each structure as either haploid or diploid:

sporophyte - diploid (2n)
spore - haploid (n)
gametophyte - haploid (n)
zygote - diploid (2n)
sperm - haploid (n)
egg - haploid (n)

No comments: