Plant Diversity 1
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interphase | ||
Interphase: G1, S (DNA Synthase), G2; Mitosis: Cytokinesis | ||
2 1 diploid cell --> 4 haploid cells | ||
land plants, vascular plants, extant seed plants | ||
1. Phragmoplasts 2. Flagellated sperm cells 3. Rose shaped cellulose sythase complex 4. Peroxisomes enzymes | ||
1. Aprical meristems 2. Alternation of generations 3. Walled spores produced in sporangium 4. Mulit-cellular gametangia 5. Mulit-cellular dependent embryos | ||
Bryophyta-Moses Hepatophyta-Liverworts Anthocerophyta-Hornwarts | ||
in non-vascular plants that anchor the plant to the substrate | ||
sperm fertilizes egg in archegonium within the gametophyte then zygote develops into the sporophyte that eventually produces spores while the gametophyte provides it nutrients and water | ||
water | ||
Lycophyta: club mosses Pterophyta: ferns, horsetails, whisk ferns | ||
carries water; part of vascular tissue | ||
carries nutrients; part of vascular tissue | ||
branched sporophytes; give the plant an opprotunity to produce more sporangia and spores, thus potentially produce more offspring | ||
produce identical spores, same sex spores | ||
produce 2 sizes of spores megaspores: large spores, produce female microspores: smaller spores, produce male gametophyte |