PPT-EVOLUTION OF LAND PLANTS

From Last Day Closest Living Relatives of Land Plants Charophytes Chara Coelochaete Some Charophytes Typical Charophyte habitat Adaptations sporopollenin polymer Pollen grains land plants. Spring . 2014. Outline. Review of land plant phylogeny. Characters of seed plants. Gymnosperm phylogeny & diversity. Cycads. Gingko. Conifers. Gnetophytes. Review of land plant phylogeny. Green plants (viridophytes). A mechanism for change in populations.. Any change in the . inherited . traits within a population across generations. Individuals better adapted to their environment tend to survive and . produce more offspring. What do we use in order to determine evolutionary relationships?. Fossil Record. Anatomical Evidence. Molecular Evidence. Embryological Evidence. Evidence for Evolution. Fossil Record. Evidence for Evolution. Plants= eukaryotic, . multicellular, . photosynthetic. . Green Algae. Bryophytes. (Non-vascular). Tracheophytes. (Vascular). Non-seeds. Seeds. Gymnosperms. (Naked seeds). Angiosperms. (Seeds in flowers and fruit). Moist Dry environments. 1) Swimming sperm . (club moss, horsetails, ferns). 2) Airborne pollen swimming sperm . (few gymnosperms). 3)Airborne pollen . (gymnosperms & angiosperms). Define the term variation.. Discuss the fact that variation occurs within, as well as between, species.. Describe the differences between continuous and discontinuous variation, using examples of a range of characteristics found in plants, animals and other organisms.. Why should we care about plants, at all?. Carbon dioxide levels. Indicators for ground level pollution, long before animals. Japan/ radioactive food….. But… . Kudzu- invasive. Did you know……. Mechanisms of concerted evolution. Unequal cross-over. Gene conversion: non-reciprocal transfer of information between homologous sequences; the main mechanism invoked to explain concerted evolution. Spring 2013. Outline. Review of land plant phylogeny. Characters of seed plants. Gymnosperm phylogeny & diversity. Cycads. Gingko. Conifers. Gnetophytes. Review of land plant phylogeny. Green plants (viridophytes). PURPOSE To become familiar withwhat makes plants growOBJECTIVES For youth to identify five basic plantneedsdescribe what a plantneeds in order tomanufacture its own fooddescribe how the nutrientconten Chapter 17: Processes of Evolution. Early Beliefs. 19. th. century: discovered species shared many traits, but lived in different parts of the world. Problematic – species only looked similar on the outside, but inside were very different . Evolution. – when a species of plants or animals adapts to their environment in order to survive over a long period of time. Key points!. Species. Plants or Animals. Adaptations. In order to survive. . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference. . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference.