Lecture 12 - plant diversity II0

Lecture 12 - plant diversity II0 - L ectu re 12 Outline...

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Lecture 12 Outline – Plant Diversity I I I. The Evolution land plants A. Shared traits between Plants and algae 1. multicellular 2. eukaryote 3. Photosynthetic 4. Cell walls (cellulose) 5. Chlorophyl 6. A and B enzyme B. shared traits between plants and charophyceans 1. Rose-shaped complexes for cellulose synthesis 2. Peroxisome enzymes 3. Formation of phragomoplast C. Shared traits between all plants (derived traits) 1. Apical meristems 2. Alternation of generations 3. Walled spores in sporangia 4. Multicellular gametangia 5. Multicellular dependent embryo 6. Vascular Tissue not needed for plants to be on land D. Shared traits of all SEED plants ( seed – sporophyte embryo pakced within food and encased in protective coat) 2n organism 30.2 1. Reduced gametophyte stage (microscopic and contained w/in sporophyte. Spore does not disperse!) Evolutionary trend towards reduced gametophyte
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Lecture 12 Outline – Plant Diversity I I 2. Heterospory – produce megaspore and microspore, that develop into
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This note was uploaded on 08/19/2011 for the course BSC2011C 2011 taught by Professor Fedorka/song during the Spring '11 term at University of Central Florida.

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Lecture 12 - plant diversity II0 - L ectu re 12 Outline...

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