Review:
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examples of protista ­
traits of protista
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protista reproduction
Jan 4­7:41 AM
Kingdom Fungi (Page 152)
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fungi are non­photosynthetic heterotrophs that grow in the ground and possess cell walls
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they have some plant like qualities
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bodies are made of filaments call hyphae
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a loose branching network of hyphae that makes up the bulk of a fungus under the soil is called a mycelium
Jan 4­3:23 PM
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Jan 4­3:28 PM
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fungi are classified according to their reproductive characteristics
(a) Zygomycotes: (page 154)
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reproduce by releasing zygospores and sexual reproduction
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bread mould is an example
Jan 4­3:30 PM
2
(b) Basidomycotes: (page 155)
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reproduce by producing basidospores and sexual reproduction
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mushrooms and puffballs are examples
Jan 4­3:35 PM
(c) Ascomycotes: (page 155)
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reproduce using asci (spores spread by wind) and sexual reproduction
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yeast is a common example
Jan 4­3:38 PM
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(d) Deuteromycotes: (page 158)
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develop from spores called condia
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seem to be asexual only with no sexual phase
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penicillium is an example
Jan 4­3:42 PM
Fungus Life Cycle (Figure 5.28, page 154)
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Rhizopus stolonifera is black bread mould
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the small dots/fuzz are reproductive structures
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this fungus goes through sexual and asexual reproduction
Jan 4­4:08 PM
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Sexual Reproduction
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two haploid hyphae of opposite types called mating strains (+ and ­) spread out across the bread
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they combine and fuse their nuclei together to produce a diploid cell called a zygospore
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the zygospore is rooted to the bread by rhizoids and a thick wall forms around the zygospere protecting it
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it will stay this way until spores are produced
Jan 4­4:15 PM
Asexual Reproduction:
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a zygospore develops a form of hyphae called sporangiophores which have sporangia ­
the sporangia release spores which spread out when the capsule is split
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these spores spread out and develop into hyphae thus spreading the bread mould
Jan 4­4:23 PM
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Jan 4­4:29 PM
Readings:
Pages 152 ­ 158
Questions:
Page 158: #'s 1,2,3,4,5,6
Jan 4­4:27 PM
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