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Lecture 4

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

Wildlife Ecology and Conservation
Course Code
WIS 2552
Michael P Moulton

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Forms of Biodiversity: Topic Four
Five Kingdoms of Organisms
o Each kingdom shares evolutionary history (phylogeny)
o Differences among these kingdoms are visible at the cellular level
o Monera
Bacteria. In ecosystems, bacteria play a variety of roles in biogeochemical
cycles but chiefly involved in decomposition
o Protista
Unicellular eukaryotes
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
o Fungi
Multicellular eukaryotes with a cell wall made of chitlin
Mainly attack plants while bacteria mainly attack animals
Environmental problem of fungicide to crops
Yeast, penicillin
o Plantae
Multicellular eukaryotes that have cell walls made of cellulose and their
cells have organelles called chloroplasts
Plants produce a number of secondary compounds with health benefits and
Pacific Yew produces an anti-cancer compound only found in Pacific NW.
What are the losses from deforesting the tropics?
Major steps in plant evolution
Invasion of land during late Paleozoic
Evolution of vascular tissue, Paleozoic
Evolution of seeds, Paleozoic
Diversification of flowering plants, Mesozoic/Cenozoic
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