WIS 2552 Lecture Notes - Lecture 4: Tetrahymena, Taxus Brevifolia, Paleozoic

• School: University of Florida
• Department: Wildlife Ecology and Conservation
• Course: WIS 2552
• Professor: Michael P Moulton

Document Summary

Forms of biodiversity: topic four: each kingdom shares evolutionary history (phylogeny, differences among these kingdoms are visible at the cellular level, monera, bacteria. In ecosystems, bacteria play a variety of roles in biogeochemical cycles but chiefly involved in decomposition. Includes algae, dinoflagellates, parasitic infections: most need intermediate helper species (host) to complete life cycles, tetrahymena pyriformis are an important test species because their mitochondria are similar to humans. What are the losses from deforesting the tropics: major steps in plant evolution. Cavity at top half is a blastaseal, ultimately becomes archenteron: stage is set for gastrulation: cells begin to invaginate at blastopore, until gastrulation, all activities were governed by genetic messages that were originally in cytoplasm of oocyte. At gastrulation, embryonic genes switch on and three embryonic tissue layers form: deurtrostomes vs protostomes, protos have spiral cleavage while deuteros have radical cleavage, blastopore is mouth of animal of protostomes.