outline21 - Outline21 4/16/03

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  Outline 21 4/16/03   Plant evolution  - Marine or fresh-water algae (Green  or Brown      Algae )   Bryophytes  (Club Mosses)   Tracheophytes  (Land       Plants) Changes  needed to colonize land :      1. Protection  from environment - Bark  on stems, waxy cuticle  +           stomata  on leaves, prevent water loss.      2. Vascular tissue ) - support +   for support, get           water + nutrients, from soil      3. Change  in reproduction  from full alternation of generations           (Sporophyte  C  Gametophyte) with spores germinating in           wet soil to reduction of gametophyte  to just cone on adult           sporophyte producing eggs (seeds) and sperm (pollen           grains) for fertilization. Tracheophyte groups
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This note was uploaded on 05/05/2011 for the course GEO 404c taught by Professor Staff during the Spring '08 term at University of Texas at Austin.

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outline21 - Outline21 4/16/03

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