Sperm (n) Egg (n) Spores (n) Zygote (2n) Haploid (n) Diploid (2n) Multicellular gametophyte (n) Green Algae (Charales) nonvascular haploid dominant homosporous.

Sperm (n)

Egg (n)

Spores (n)

Zygote (2n)

Haploid (n)

Diploid (2n)

Multicellulargametophyte (n)

Green Algae (Charales)

• nonvascular

• haploid dominant

• homosporous

• motile gametes

• seedless

• water dependent

sporophyte

Egg (n)

Zygote (2n)

Spore (n)

Maturegametophyte (n) Mature

gametophyte (n)

Developingsporophyte

Developinggametophyte

Mosses• nonvascular (mostly)

• haploid dominant

• homosporous

• motile gametes

• seedless

Simple, unbranched sporophyte dependent on gametophyte.

See Fig 29.16

Ferns• vascular

• diploid dominant

• homosporous

• motile gametes

• seedless

Branched sporophyte not dependent on gametophyte at maturity.

reduced, naked... Fig. 29.23

Gymnosperms

• vascular • diploid dominant• heterosporous• nonmotile gametes• naked seeds• not water dependent

Angiosperms

• vascular

• diploid dominant

• heterosporous

• nonmotile gametes

• seeds

• not water dependent