BIOL 152 1st Edition Lecture 14I. Plant DiversityA. Multicellular photosynthetic organisms 1. Develop from embryos 2. Evolved from common ancestor like green algae3. Alteration of generationsB. 3 variations on gametophyte/sporophyte relationships 1. Sporophyte dependent on gametophyte2. Large sporophyte and small, independent gametophyte3. Reduced gametophyte dependent on sporophyteC. Plants began their occupation of the land approximately 500 million years ago D. Groups of Land Plants1. Non- Vascular (Bryophyta)a. Mossesb. Liverwortsc. HornwortsE. Vascular (tracheophyta)a. Lycopodiumb. Horsetailsc. Fernsd. Coniferse. Flowering Plants (angiosperms)F. Bryophytes1. Mosses These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. Liverworts 3. Hornworts4. Lack a vascular makeup and complex organs, the bryophytes exhibit an alternation of generations like that of the plants 5. Body or thallus6. No roots but rhizoidsG. Ferns1. Terrestrial, aquatic, epithytes2. Leaves, megaphylls3. Circinate vernation, forming fiddlehead4. Sporangia arranged in sori on abaxial side H. Conifers1. Gymnosperms2. Megaphylls3. Heterospory4. Pollen (male gametophyte)I. Genosperms1. Ginkgophyta2. Cyadophyta3.
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