Invertebrates_lab 8_2010_student

Invertebrates_lab 8_2010_student - Next lab report...

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Next lab report Reminders: Due in 2 weeks (2 nd week of Nov.) Acceptable sources include text book, review papers (like the one posted on BB), and primary papers (which have intro, You must have at least 2 primary papers! Make sure intro section is SPECIFIC to your topic, not on invertebrates in general!
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Conservation Presentation Today, pick partners Next week- sign up for topics Topic- conservation biology Presenation- 2 parts- 1:Background on conservation topic 2: Approach to fixing the issue 10-12 minutes (lose points if too short or long) Graded on content, visual (slides), oral, and incorporating good references (incl. citations & having reference list) References may be scientific articles, magazine articles, or websites. BUT MUST INCLUDE AT LEAST 1 PRIMARY PAPER PUBLISHED WITHIN 5 YEARS
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Invertebrates Lab Topic 9: pp. 171-192
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What is an “animal?” Heterotrophic eukaryotes Multicellular Lack cell wall Tissues Cells are bound together in specialized layers (tissue) Tissues originate from germ layers
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Invertebrates (here we examine 8 phyla) Kingdom Animalia- 95% invertebrates (no backbone) Grouped according to: Germ layers Coelom Symmetry Development
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Germ layers During development, germ layers differentiate into various tissues and organs in the body Three types: Ectoderm (outer) germ layer Outer covering, nervous system Mesoderm (middle) germ layer Muscles, other organs Endoderm (inner) germ layer Lines digestive tract, liver, lungs 2 germ layers= diploblastic (lack mesoderm) 3 germ layers= triploblastic
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Coleom Coelom : body cavity separating the digestive tract from the outer body wall A true coelom is lined by tissue derived from the mesoderm Acoelomate = lacks mesoderm, or have no cavity within mesoderm Pseudocoelomate = cavity partially lined by endoderm and mesoderm Colemate = true cavity lined by mesoderm
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Asymmetrical, radial or bilateral symmetry Protostome v. Deuterostome development
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This note was uploaded on 10/29/2010 for the course BIO 120 taught by Professor Staff during the Fall '07 term at USC.

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Invertebrates_lab 8_2010_student - Next lab report...

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