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General Biology 2
MSU DENVER PROFESSOR R. BRYAN
Question | Answer |
---|---|
earliest plants are thought to be evolved from, descendants of... | green algae |
scientific name for PHYLOGENY of GREEN ALGAE , {closest extant relative of land plants} | CHAROPHYCEANS "origins, ancestor to land plants" think 'mother ocean, charophycean, aqueous, closest relative' |
four major phases of plant evolution | I. [bryophytes], NON-VASCULAR PLANTS, no xylem/phloem MOST SIMILAR TO CHAROPHYCEANS II. [seedless vascular plants], had xylem and phloem. III. [gymnosperm] seed that nourishes and protects IV. [angiosperm] flowering plants, FRUITING, easily pollenated |
GGT SSE | gametophytes produce gametes mitotically Sporophytes produce Spores via mEiosis |
Thallus | gametophyte plant body lacks xylem or phloem |
bryophyte reproduction requires (mosses) | water! for the sperm to travel via chemotaxis |
bryphyte resource movement (mosses) | water via OSMOSIS, nutrients via DIFFUSION 'mosses osmosis' |
3 phyla of nonvascular plants [ bryophytes ] | mosses, liverworts, hornworts |
branches of unicellular filament produced by germinating moss spore | protonema |
bryophyte gametophytes anchored via | rhizoids (1n) key: primarily for support, not for water/mineral transport |
gamete producing structure [bryophytes/nonvasculars] | gametophore [bryophytes/nonvasculars] |
bryophyte anatomy 1. rhizoid 2. | |
bryophyte sporophytes can survive independently? | no, bryophyte sporophytes are dependent on parental gametophyte. |
bryophyte ploidy sporophyte | bryophyte ploidy sporophyte - 2n diploid |
prefix/suffix 1 1 green: 2 with or together with: 3 life: 4 outer layer, bark: 5 leaf: 6 formed substance: 7 light: 8 middle: 9 top, highest: 10 tough, hard: | 1 chloro- 2 co- 3 bio- 4. -cortex 5 - phyll 6 -plasm 7 photo- 8 meso- 9 apic- 10 scler- |
prefix/suffix 2 1. to produce: 2 skin: 3 of neither gender or type: 4 below: 5 egg: 6 to bear, to carry: 7 between: 8 change, turn, move: 9 across: 10 around: / | 1. gen- 2. cuti 3. neutr- 4. hypo- 5 oo- (or ov-) 6 -fer 7 inter- 8 -trop- 9 trans- 10 peri- |