sept16LecNotes

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

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Unformatted text preview: 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 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...
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This note was uploaded on 10/21/2009 for the course BIO G 109 at Cornell.

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

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