Biodiversity3

Biodiversity3 - 9/24/2009 Biodiversity Part 3 - Eukarya 3...

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9/24/2009 1 Biodiversity Part 3 - Eukarya 1 Domain Eukarya Kingdom Fungi 3 Domain classification 2 [____Prokaryotes________] Domain 3 = Eukarya ± 4 traditional kingdoms ² Protista ² Fungi Structure Growth ² Plantae ² Animalia 3 Nutrition Diversity Classification Reproduction And Improtance Comparison 4 Kingdom Fungi ± Yeasts, molds, mushrooms ± Present worldwide in aquatic and terrestrial environments ± Many symbiotic with plants ± Cell walls contain chitin ± Most multicellular ± Mass of hyphae combine to make mycelium 5 Kingdom Fungi - examples ± Golden Mushrooms ± Common Bread Mold ± Baker’s yeast 6
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9/24/2009 2 Fungi Evolution and Diversity ± Fungi have some similarities to animals ² Both are heterotrophic – cannot produce their own food ² Both use absorptive nutrition – secrete enzymes and absorb resulting small organic molecules ² Both store surplus food as the carbohydrate glycogen 7 Distinctive Features of Fungi: Unique cell-wall chemistry ± Fungal cells enclosed by tough cell walls composed of chitin ± Cannot engulf food by phagotrophy due to 8 Cannot engulf food by phagotrophy due to rigid cell walls ± Cell wall also restricts mobility of nonflagellate cells Distinctive Features of Fungi: Unique body form ± Most have mycelia composed of hyphae ± Most of the mycelium is diffused and inconspicuous 9 ± Fruiting bodies are the visible reproductive structures ² Mushrooms are one type ² Produce spores ± Rhizomorphs are fungal mycelia with the shape of roots to transport water Fungal Hyphae ± Fungi have distinctive bodies called mycelia make up of branches of filaments called hyphae that are often hidden in the food substrate.
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Biodiversity3 - 9/24/2009 Biodiversity Part 3 - Eukarya 3...

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