1. Largest & most diverse class.
2. Univalve - 1 shell.
3. Protection - allows gastropod to pull its head into the mantle cavity when threatened.
Class Bivalvia
Scallop
1. Bivalve - two valves or halves.
2. Pearl - irritant gets inside shell, mantle coats it with a secretion known as mother of pearl.
3. Feeding - filter feed.
Class Cephalopoda
Nautilus
1. Large, well-developed head
2. Circulatory system - (closed) - blood circulates in vessels.
3. Jaw (parrot beak) - kill & eat prey.
What do I find most interesting about this phylum?
I like this phylum because this was the phylum that squids were in. I think they are really awesome animals!
Works Cited
"MOLLUSCA - THE MOLLUSKS (CLAMS, SNAILS, CEPHALOPODS ET AL.)" Lamont - Doherty Earth Observatory. 12 April 2002. Online. http://www.ldeo.columbia.edu/edu/dees/ees/life/slides/phyla/mollusca.html. 14 May 2004.
"Phylum Mollusca." The Biognomen. Online. http://members.aol.com/bafiler/Mollusca.html. 14 May 2004.
"Phylum Mollusca." Bellarmine University. Online. http://cas.bellarmine.edu/tietjen/images/phylum_mollusca.htm. 14 May 2004.
"Phylum Mollusca" Allegany County Public Schools. Online. http://infusion.allconet.org/webquest/PhylumMollusca.html 14 May 2004.
