BIOL 1511 Study Guide - Midterm Guide: Psilotum, Phylogenetic Tree, Non-Vascular Plant
Document Summary
1. 01 phylogenetic trees, prokaryote diversity, and earliest traces of life. Prokaryotes cyanobacteria mitochondria eukaryotes engulf cyanobacteria to form chloroplasts multicellular eukaryotes (red or green algae) recent plants. Either leaves an imprint or mineralizes (hard shells, common species, coastal areas are often found over rare, soft species) living on a rock (prokaryotes); origin of life; origin of oxygenic photosynthesis. Hadean: earth was bombarded by large space debris (4. 5 bya to 3. 8 bya) Archaean: stromatolites (first life on earth at 3. 5 bya) - microbial communities. Proterozoic: diversification in prokaryotes eukaryotes arose; great oxygenic. Phanerozoic: explosion of life (mammals, amphibians, reptiles not dominated event; origin of eukaryotes by prokaryotes) Cambrian- appearance of all major animal phyla present on earth today and extensive diversification of other lineages. Permian- greatest extinction event in history; loss of about 96% of marine and 70% of terrestrial species. Mesozoic- origin of dinosaurs, mammals, and angiosperms; gymnosperms and dinosaurs were dominant terrestrial organisms.
