Sept18Lec - Transcribed lecture notes(ppt Routine Class...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
9/18/2008 Transcribed lecture notes. (ppt) Routine Class Matters ~ Reading assignments for Today: Chp 17.15 to end, Chp 18 intro essay through 18.14: next Tuesday through 18.17 (jawed vertebrates and fishes) intro essay through section 17.14 Reading for Tues 17.15 to end, & Chp 18 intro essay through 18.14 Error in syllabus, Prelim #1 covers through Chp 18.14 (echinoderms and intro to chordates) My office hours: this week as usual, next week Monday 2-3PM, Tues 2-4 PM, and Wednesday 2-4 PM. (ppt) Remember during development ~ in protostomes the gastrula opening becomes the mouth, whereas in deuterostomes the gastrula opening becomes the anus. (ppt) Review of classification you need to know for Prelim. Think of using these terms to construct a phylogenetic tree. (ppt) Slides depicts entire list of taxa you need to know for Prelim. (ppt) Poriferans – sponges. o simplest living animals o no true tissues o choanocytes (collar cells) – cilia within the cell is used to capture food particles from the water. o many have radial symmetry (some forms have no symmetry at all o sessile (don’t move) (ppt SERIES) Cnidarians – includes jelly fish, sea anemones, coral, Hydra (Figure 18.6 A-C) Cnidocytes – specialized cells that contain nematocysts [harpoon- like structure] used to capture prey. (see text book images Figure ) 1 st animal with true tissues o HOWEVER, they only have 2 germ layers produced during Gastrulation Radial symmetry Gastrovascular cavity 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
9/18/2008 Transcribed lecture notes. (ppt)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Sept18Lec - Transcribed lecture notes(ppt Routine Class...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online