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Biodiversity: Exercise 10: Bacteria And Exercise 11: Kingdom Protista and Fungi The Three Domains of Life How are eukaryotes more closely related to? 1 Domain: Bacteria • Cell type: prokaryotic • Unicellular (but some form colonies) • How do they obtain their organic molecules? Some are autotrophs (cyanobacteria) and others are heterotrophs by absorption decay material, living on organisms, free living Few bacteria cause disease Bacteria shapes: fill out table 1 using poster 2 Procedure 1: Bacteria sensitivity to Antibiotics Consumer report Procedure 2: Nitrogen fixation Legume plants house nitrogen fixing bacteria in bulbs of root tissue called nodules 3 Procedure 3: Photosynthetic Bacteria Decomposer Bacteria 4 Bacteria are used in the food industry and in medicine Kingdoms of Domain Eukarya • Characteristic of all Eukaryotes Cell type: eukaryotic • An important characteristic for dividing eukaryotes into Kingdoms is by: • How do they obtain their organic molecules? Kingdom Plantae: autotrophs Kingdom Animalia: Heterotrophs by ingestion Kingdom Fungi: Heterotrophs by absroption • How about protists? 5 Excercise11: Kingdom Protista Mostly unicellular but there are some multicellular forms How do they obtain their organic molecules? Some are heterotrophs by absorption some are heterotrophs by ingestion and others are autotrophs Procedure 1: Protist locomotion 6 Procedure 2: Protist nutrition Importance of some protista 7 Important some Protista Trypanosoma causes Chagas disease Plasmodium causes Malaria disease Ex. 11:Kingdom Fungi - Cells with cell wall of chitin (carbohydrate) - Heterotrophs by absorption important ecologically as decomposers - Body is composed of hyphae (threads of cytoplasm and nuclei) mass of hyphae mycelium - Reproduction: asexual and/or Sexual reproduction both by spores Sporangium (pl. sporangia) structure that produces spores 8 P 3. Division Zygomycota: Rhizopus(bread mold) Mycelium Sporangium Gametangia Zygospore P 4. Divison Ascomycota: sac fungi (yeast) 9 P 5. Division Basidiomycota: club fungi (mushrooms) Mushroom parts: Cap Gills Basidia Importance of Fungi: decomposers, food, medicine and food industry 10