Bio 2 notes chapter

Bio 2 notes chapter - Bio2noteschapter.28 22:53...

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Bio 2 notes chapter. 28 22:53 Water molds(oomycota) 1. resemble fungi 2. cellulose cell walls 3. diplontic life cycle 4. flagellated cells 5. important decomposers in the aquatic environment 6. absorptive nutrition Brown Algae Algae- any photosynthetic protest; lives in water, carries out photosynthesis but is not a  plant 1. seaweeds 2. the body is called a thallus 3. multicellular  3. resemble plants as a result of convergent evolution 4. found in shallow water 5. gelatinous polysaccharides protect the thallus 6. diplohaplontic life cycle: Diploid sporophyte alternates with haploid gametophyte These generation are heteromorphic as opposed to isomorphic Heteromorphic- different forms; look different
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Isomorphic- same form Heterogamy- the fusion of unequal Heterogametic- gametes are different in appearance Isogametic- gametes are the same Red Algae 1. multicellular 2. red color due to phycoerythrin 3. live in deep water often associated with coral reefs 4. no flagellated in their life cycle Green Algae 1. chloroplast similar to plants 2. most live in fresh water 3. unicellular, colonial, multicellular 4. haplontic and diplohaplonic life cycles 5. common ancestry with plants
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Bio 2 Chapter 31 22:53                                Kingdom fungi Characteristics: 1. eukaryotic 2. multicellular except yeast 3. heterotrophs 4. absorptive nutrition and extra cellular digestion 5. cell walls composed of chitin not cellulose 6. mycelium compose of hyphae; also the body of a fungus 7. haplontic life cycle sexual and asexual stages (both produce spores) dikaryotic stage 8. rapid growth 9. wide variety of symbiotic relationships 10. store glucose as glycogen Structure: The body of a fungus is called a mycelium made up of tubular filaments of cells called  hyphae Study the types of hyphae: 31.3 and 31.4 Harstoria- (plural) parasitic hyphae
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Bio 2 Chapter 31 22:53 Rapid growth occurs for two reasons: 1. the mycelium produces an extensive surface area for absorption. 2. Rapid movement of the nutrients between cells. Types of fungi Saprophytic- absorb nutrients from nonliving organic material Parasitic- absorb nutrients from the cells of living hosts Mutualistic- absorb nutrients from a living organism ut provides a benefit in return Sexuality  (study figure 31.5) Plasmogamy-  Karyogamy- Dikaryotic cell- two haploid nucleide *know when meiosis occurs Phylum: Chytridiomycota Characteristic: 1. called chytrids 2. mainly aquatic 3. only fungal group that produces flagellated spores 4. the most primitive fungi
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Bio 2 Chapter 31 22:53 Phylum Zygomycota Characteristics: 1. coenocytic hyphae 2. zygosporanium produce by mating hyphae 3. zygosporanium resist harsh conditions
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This document was uploaded on 10/27/2011 for the course ESS 1301 at Texas Tech.

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Bio 2 notes chapter - Bio2noteschapter.28 22:53...

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