Sperm (n) Egg (n) Spores (n) Zygote (2n) Haploid (n) Diploid (2n) Multicellular gametophyte (n)...
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Transcript of Sperm (n) Egg (n) Spores (n) Zygote (2n) Haploid (n) Diploid (2n) Multicellular gametophyte (n)...
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