sept16LecNotes - 16 September 2008 Notes taken by Dr...

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16 September 2008 Notes taken by Dr Balko (ppt) Routine Class Matters ~ Reading assignments for Today: Chp 17.5 to end to end & Chp 18 intro essay through section 18.14: next Tuesday through 18.17 (jawed vertebrates & fishes). Error in Syllabus, Prelim #1 covers through 18.14 (echinoderms and introduction to chordates). Harry’s office hours: this week as usual, next week Monday 2-3PM, Tuesday 2-4 PM, and Wednesday 2-4 PM. (ppt) Review of what we’ve done so far in our cladistics review and where we’re going next…. (ppt) Clicker Question. Answer = E (ppt) Fungi – more closely related to animals than plants. Rigid cell walls (more plant like) Heterotrophs – (more animal like) excrete enzymes to help them absorb nutrients. o Typically Detritovores [use enzymes to break down organic matter into chemical building blocks to facilitate absorption]. (ppt) We’ll review the 5 major groups of fungi (see text for review). Extremely diverse organisms w/a diverse array of feeding modes. Parasitic Predaceous decomposers (ppt) Fungi are Heterotrophic Eukaryotes However, they digest their food externally Key characteristics include hyphae & mycelium (ppt) ID & compare mycelia (collection of hyphae) versus hyphae. They can grow rapidly via extension of hyphae (ppt) Phylogenetic tree (Figure 17.17A) with major groups of fungi. The most inclusive node on the bottom of figure = Fungi. Know these major groups Read about Chytrids in your text (ppt) Chytrids (see Figure 17.17A and text) More protistan-like than fungal Responsible for world-wide frog decline 1
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16 September 2008 Notes taken by Dr Balko (ppt) Fungi Review ecological advantages of the fungi {read about this in your text} o Essential decomposers Review the many economic benefits of fungi {read about this in your text} o Antibiotics o food (ppt)
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