Jan 20 - Biol 119

Jan 20 - Biol 119 - 1/20/2012 Announcements Animal...

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

View Full Document Right Arrow Icon
1/20/2012 1 Animal Diversity (esp. the Invertebrates) Announcements Homework #1 is posted on MyCourses the quiz associated with this homework will open online on Jan 26 th Clicker scores from Wednesday are posted online if you have a zero or no score, there is a problem. All clicker problems must be remedied NLT Wednesday, Jan 25th How many animal species have been named and described? A. ~ 100,000 B. ~ 1 million C. ~ 5 million D. ~ 30 million What phyla contains the greatest number of species? A. Choanoflagellates B. Eumetazoa C. Chordata D. Bilateria E. Arthropoda F. Porifora ANCESTRAL COLONIAL FLAGELLATE Deuterostomia Protostomia Bilateria Eumetazoa Metazoa Porifera Cnidaria Ctenophora Ectoprocta Brachiopoda Echinodermata Chordata Platyhelminthes Rotifera Mollusca Annelida Arthropoda Nematoda Distinctions between Radiata & Bilateria Classifying groups within the Bilateria Organization of Tissue Layers(Bilateria): Body Cavities Acoelomates- no body cavity Pseudocoelomates digestive tract not completely lined w/ mesoderm Coelomates true body cavity
Background image of page 1

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

View Full DocumentRight Arrow Icon
1/20/2012 2 Bilateria: Patterns in Early Development Cleavage pattern Coelom development Fate of Blastopore Patterns in Early Development: Cleavage Protostomes: spiral, determinate cleavage Deuterostomes: radial and indeterminate cleavage Protostome development (examples: molluscs, annelids, arthropods) Deuterostome development (examples: echinoderms, chordates) Protostome development (examples: molluscs, annelids, arthropods) Deuterostome development (examples: echinoderms,
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.

This note was uploaded on 02/08/2012 for the course BIOL 119 taught by Professor Hannam during the Spring '11 term at SUNY Geneseo.

Page1 / 6

Jan 20 - Biol 119 - 1/20/2012 Announcements Animal...

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