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No vascular plants: mosses, liverworts, and hornworts (Characters of…
No vascular plants: mosses, liverworts, and hornworts
Characters of Nonvascular Plants
Somewhat familiar
Embryophytes with no vascular tissue
Life cycle
Classifications of nonvascular plants
Mosses, liverworts, hornworts
Division Bryophyta: Mosses
Gametophyte generation
Morphology
Water transport
Development
Reproduction
Sporophyte generation
Metabolism and ecology
Small size & lack of conducting tissue
Smaller than most plants
Mechanisms to compensate
Division hepatophyta: liverworts
Gametophyte generation
Leafy liverwort & thallose liverwort
Leafy
Thallus
Sporophyte generation
Little variability
Division anthocerotophyta: hornworts
Gametophyte generation
3-4 protonema cells produced before
Numerous internal chambers
Distinctive gametangium
Archegonia formed from superficial cells
Sporophyte generation
Not many similarity in sporophyte of moss and liverwort and of hornwort
