Biology Ch 29

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Author:
nicknguyen93
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75587
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Biology Ch 29
Updated:
2011-03-28 01:17:23
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biology
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  1. Bryophytes
    • hornworts, liverworts, mosses
    • nonvascular plants
    • gametophyte dominant
    • contain gametangia
    • sporophyte remains attached to parent gametophyte
  2. Heterosporous
    produces megaspores and microspores
  3. Plant Ancestors
    • green algae, charophyceans
    • had chl a, accessory pigments, cellulose, stored carbs as starch, formed cell plates in cytokinesis
  4. Terrestrial Adaptations
    • gametangia
    • cuticles
    • stomata
    • vascular tissue
    • lignin
    • seeds
  5. Megaphylls
    • large leaves
    • served by a branched vascular system
    • evolved from the fusion of branched stems
  6. Characteristics of Plants
    • photoautotrophic
    • multicellular
    • eukaryotic
    • store carbs as starch
    • chl a, b, and caratenoids
    • mit and mei
  7. Gametangia
    • jacketed sex organs
    • produced by gametophyte forms of bryophytes, pteridophytes, and gymnosperms
    • archegonia - doesn't release egg. zygote develops inside
    • antheridia - releases sperm. sperm must swim
  8. Sporophyte vs Gametophyte Dominant
    • trend towards sporophyte
    • forms differ in morphology
  9. Seedless Vascular Plants
    • Pteridophytes
    • Sporophyte Dominant
    • Homosporous
    • Lycophytes (club mosses) - sporophylls
    • Psilophytes (whiskferns)
    • Sphenophytes (horsetails)
    • Pterophytes (ferns)

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