AD 3 0.0 / 5 ? BiologyEarly LifeUniversityAll boards Created by: ellamarshall1Created on: 19-12-16 14:14 what are the 5 main features of metazoa? Eukaryotic, multicellular, heterotrophic, motile and have no cell wall 1 of 17 Present the timeline 4 Hadean, Archean, Proterozoic, Phanerozoic 2 of 17 when was the hadean time? 4600-4000mya 3 of 17 when was the archean time 4000-2500mya 4 of 17 when was the proterozoic time 2500-540mya 5 of 17 when was the phanerozoic time 540-0mya 6 of 17 key features of archean time? (4) low o2, high CO2 and CH4, evidence of photosynthesis from cyanobacteria and lipid fossils, stromatolites formed from cyano photosynthetic bubbles 7 of 17 key features of proterozoic (2) eukaryotes form from multiple endosymbiosis and multicellularity arose 8 of 17 what are the 3 types of ediacaran biota Branching forms- vendobiota, radial forms and possible bilaterally symmetrical animals 9 of 17 Where/when is the ediacaran biota from 553mya from ediacara hills in australia 10 of 17 Features of vendobiota 2 fractal growth and alternate arrangments of tubules and fronds 11 of 17 features of radial forms 3 frond bases or circular microbial, tri-octaradial discs, layers of symmetry 12 of 17 What is the ecology of the ediacaran biota? (6) lived on flat planes, mostly epibenthic, sessile, short food chains, high SA:vol ratio and asexual repo 13 of 17 Which fossil is truly bilaterian? Kimberella 14 of 17 Which fossil is early bilaterian? Spriggina 15 of 17 Which fossil is a placozoan? Dickinsonia 16 of 17 Which fossil is thought to be a metazoan Haootia 17 of 17
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