MBG 2400 Lecture Notes - Lecture 2: Non-Vascular Plant, Apomixis, Green Algae
15 Nov 2016
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What do we mean by plants and animals. 5 major bifurcations of metazoa tissues, symmetry, body cavity, digestive cavity, exoskeleton. Metazoa (animal) characteristics eukaryotic, multicellular, lack cell walls, heterotrophic. *most but not all = show motility, sexual reproduction (embryos), complex tissues. ~ more species of beetles than anything else on earth. 4 major bifurcations of viridophytes ability to live on land, vascular tissues, seed, flowers. ~ plant kingdom uses (cid:498)divisions(cid:499), where animal kingdome uses (cid:498)phylum(cid:499) ~ angiosperms (flowering plants) = largest plant group on earth. ~ many green algae do not show an alternation of generations. ~ fern = good example of a non-seed plant. 80% total species (65% of total species are in. **plants mitosis occurs in both the 2n phase and the n phase (gametophytic phase) = unique to plants. Meiosis and recombination - the 2 phases of meiosis result in gamete formation (haploid) and gene recombination. Many green algae do not show an alternation of generations.
