CH_22_STUDENT_OUTLINE

CH_22_STUDENT_OUTLIN - Chapter 22 Animal Diversity I Invertebrates Key Features of Animals • – – – – • Animal Evolution • – – –

Info iconThis preview shows pages 1–25. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 22: Animal Diversity I, Invertebrates Key Features of Animals • – – – – • Animal Evolution • – – – • Porifera (sponges) Cnidaria (jellyfish, corals, anemones) Ctenophora (comb jellies) Arthropoda (insects, arachnids, crustaceans) Platyhelminthes (flatworms) Annelida (segmented worms) Mollusca (clams, snails, octopods) Echinodermata (sea stars, sea urchins) Chordata (lancelets, vertebrates) cuticle molted protostome development deuterostome development bilateral symmetry radial symmetry no tissues tissues Nematoda (roundworms) PRIMITIVE ANCESTOR The Appearance of Tissues • • • – • • Animal Tissues • • • The Appearance of Body Symmetry • • • – Radial Symmetry • • – – • – Radial symmetry central axis plane of symmetry radial symmetry Bilateral Symmetry • • – • • Bilateral symmetry anterior plane of symmetry posterior d o r s a l a n t e r i o r p o s t e r i o r v e n t r a l bilateral symmetry Body Cavities • • – – • – Body Cavity Structure Varies Among Phyla • “True” coelom (annelids, chordates) Body Cavities - Coelom gut cavity peritoneum lined body cavity (coelom) Body Cavity Structure Varies Among Phyla • “False” or pseudocoelom (roundworms) Body Cavities - Pseudocoel epidermis gut cavity unlined body cavity (pseudocoel) around gut Body Cavity Structure Varies Among Phyla • No coelom (cnidarians, flatworms) Body Cavities - Acoelomate epidermis gut cavity no body cavity; region between gut and body wall packed with organs The Evolution of Body Cavities • • – – Embryological Development • • – – • – – Major Animal Phyla • • Invertebrate or Vertebrate?...
View Full Document

This note was uploaded on 02/14/2012 for the course BIO 1002 taught by Professor Hrinchevich during the Fall '10 term at LSU.

Page1 / 65

CH_22_STUDENT_OUTLIN - Chapter 22 Animal Diversity I Invertebrates Key Features of Animals • – – – – • Animal Evolution • – – –

This preview shows document pages 1 - 25. Sign up to view the full document.

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