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lecture 2-15 plants I - Chapter 29(pp.573-579 Initial land...

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Chapter 29 (pp.573-579) – Initial land colonization by plants//fungi Learning objectives: • Describe four shared derived homologies that link charophyceans and land plants. • Describe five characteristics that distinguish land plants from charophycean algae. Explain how these features are adaptive for life on land. • Distinguish among the stages of the alternation of generations life cycle • Explain why most bryophytes grow close to the ground. Explain why seedless vascular plants are most commonly found in damp habitats. Chapter 36(pp.738-746) Transport in Vascular Plants • Describe how proton pumps function in transport of materials across plant membranes Define osmosis and water potential. Explain how water potential is measured. • Explain how solutes and pressure affect water potential. • Name the three major compartments in vacuolated plant cells. • Describe three routes available for lateral transport in plants. • Define bulk flow describe the forces that generate pressure in plant vascular tissue. Explain what routes are available to water and minerals moving into the vascular cylinder of the root. • Explain how the endodermis functions as a selective barrier between the root cortex and vascular cylinder.
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An overview of land plant evolution Bryophytes (nonvascular plants) Seedless vascular plants Seed plants Vascular plants Land plants Origin of seed plants (about 360 mya) Origin of vascular plants (about 420 mya) Origin of land plants (about 475 mya) Ancestral green alga Charophyceans Liverworts Hornworts Mosses Lycophytes (club mosses, spike mosses, quillworts) Pterophyte (ferns, horsetails, whisk fern) Gymnosperms Angiosperms Figure 29.7
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Genetic Evidence
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