Bis2C%20Lectur28%20F2010

Bis2C%20Lectur28%20F2010 - Fall 2010 Lecture 28. Cnidaria...

Info iconThis preview shows pages 1–7. 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
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Fall 2010 Lecture 28. Cnidaria and Ctenophora • Cnidaria basic features biology within-group diversity Ctenophora: brief introduction Students should be able to: explain the term “diploblast” and its relevance for phylogeny describe the unique cell type in cnidarians explain how this cell functions explain the explain the body plan of a cnidarian polyp explain the body plan of a cnidarian medusa analyze the cnidarian life cycle and the role of asexual reproduction distinguish cnidarians from ctenophores explain what is unusual about ctenophore locomotion Radial symmetry : animal in form of cylinder, parts arranged around the long axis, and with multiple imaginary planes that divide the animal into equal halves Organization of animal body plans Symmetry : an animal is symmetrical if at least one plane can divide it into two similar, mirror-image halves Bilateral symmetry : a single plane divides animal into left and right mirror-image halves Cnidaria (sea anemones, corals, sea jellies, cube jellies, hydrozoans) • radial symmetry, around a longitudinal axis with oral (open) and aboral ends • often with tentacles around the oral end Cnidarian diversity • about 11,000 species four major clades of Cnidaria: Anthozoa (sea anemones, corals, sea pens) Hydrozoa (hydrozoans) Scyphozoa (sea jellies) Cubozoa (cube or box jellies) Cnidarians are diploblastic animals Polyp with blind gut becomes adult gastrodermis becomes adult epidermis Feeding in Cnidaria...
View Full Document

This note was uploaded on 04/19/2011 for the course BIOLOGY BIS 2C taught by Professor Doyle during the Fall '10 term at UC Davis.

Page1 / 33

Bis2C%20Lectur28%20F2010 - Fall 2010 Lecture 28. Cnidaria...

This preview shows document pages 1 - 7. Sign up to view the full document.

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