Molluscs Flashcards
Symmetry, blastia and coelom
Bilateral, triploblastic and coelomate
Give the 3 main body parts of a mollusc and their function
Muscular foot - for movement or anchorage
Visceral mass - Contains internal organs
Mantle - tissue over visceral mass that secretes the shell
What covers the radula
Chitinous teeth
What is around the esophagus and what extends from it
A nerve ring from which ventral nerve cords extend
What is the name of the structure that removes metabolic waste
Metanephridia
What is the ciliated larval stage in molluscs called
Trochophore
What is the class Polyplacophora also known as and how many dorsal plates is it divided into
Chitons - 8
Give an example of the class Gastropoda and what is the name of its embryonic process
Cone snail - Torsion
How does the class Bivalvia feed and what is the name of the muscles that draws halves together for protection
Suspension feeding - Abductor muscle
How do Cephalopods move
Draw water into the mantle cavity and expel via siphon - Jet Propulsion
What is the function of chromatophores
Camouflage