Invertebrates 8

Invertebrates 8 - Nextlabreport Reminders:...

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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  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 08/28/2011 for the course BISC 13004 taught by Professor Wetzer during the Spring '09 term at USC.

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Invertebrates 8 - Nextlabreport Reminders:...

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