11-12-07 - BIO 311D Bryophytes Mosses o non-vascular o...

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BIO 311D 12/11/2007 10:05:00 Bryophytes Mosses o non-vascular o moist habitat o …… from last time Pteridophytes arose from bryophyte like ancestors Cooksonia--this is a fossil species, dichotomous branching homosporous                   vs.                     Heterosporous Bisexual gametophytes                  archegonium    antheridium                                            Make…   megaspore       microspores Body support (lignin)—this gives  very  strong support Vessels  for conduction (xylem—transports water and phloem---transport  photosynthetic products) Seedless vascular plants lycophytes, whisk ferns, horsetails, ferns (know that is belongs to seedless  vascular plants) o has vascular tissues o habitat moist places sperm need water to reach egg sporophyte stage is dominant form (diploid cells)
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11-12-07 - BIO 311D Bryophytes Mosses o non-vascular o...

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