lab 9 bryophytes. land plants general features of the green plants common name: land plants...
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Land Plants
• General features of the green plants• Common name: Land plants• Synonyms: Embryophytes, Kingdom
Plantae• Habitat: Terrestrial, some secondarily
freshwater or marine• Growth habit: Multicellular; thallus, or
stems, roots, and leaves• Undulipodia (“flagella”): Whiplash (2
to 1000+) on sperm cells only, or none
Land Plants
• Clonal reproduction: Multicellular propagules, vegetative
• Sexual reproduction: Heteromorphic alternation of generations
• Included Phyla: Hepatophyta, Anthocerophyta, Bryophyta, Lycophyta, Psilotophyta, Sphenophyta, Pterophyta, Cycadophyta, Ginkgophyta, Coniferophyta, Gnetophyta, Anthophyta
• Recognized by: Embryonic sporophytes, airborne meiospores, cuticle
Hepatophyta
• General features of the land plants• Common name: Liverworts• Synonyms: Marchantiophyta• Growth habit: Multicellular; thallus, or
stems and leaves• Undulipodia (“flagella”): Two whiplash
Hepatophyta
• Conductive cells: None• Clonal reproduction: Gemmae
(multicellular propagules)• Sexual reproduction: Homosporous• Representative genera: Marchantia,
Porella• Recognized by: Sporophytes with
short setae, short capsules, and elaters; leaves (if present) without midribs
Anthocerophyta
• General features of the land plants• Common name: Hornworts• Synonyms: None• Growth habit: Multicellular; thallus• Undulipodia (“flagella”): Two whiplash
Anthocerophyta
• Conductive cells: None• Clonal reproduction: None• Sexual reproduction: Homosporous• Representative genera: Anthoceros• Recognized by: Thalloid gametophyte;
sporophyte with long capsule
Bryophyta
• General features of the land plants• Common name: Mosses• Synonyms: Muscophyta• Growth habit: Multicellular; stems and
leaves• Undulipodia (“flagella”): Two whiplash
Bryophyta
• Conductive cells: Leptoids (food) and hydroids (water)
• Clonal reproduction: Gemmae (multicellular propagules)
• Sexual reproduction: Homosporous• Representative genera: Mnium,
Polytrichum• Recognized by: Sporophytes with
long setae and peristomes, leafy gametophytes