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