Chapter 35 Flashcards
Which stucture makes the shell in a mollusk?
Mantle
What feature do both annelids and mollusks share?
they are coelomates
What is the name of the feeding structure that is used by most gastropods?
Radula
Which class of Mollusk does not have a radula?
Bivalvia
Gastropods undergo a process called _________________ where the visceral mass twists around 180 degrees in relation to the head
Torsion
How many siphons does a clam have?
2
Which class of Mollusks have a closed circulatory system?
Cephalopoda
How many tentacles does a squid have?
10
To what class of Mollusks does this organism belong?
Cephalopoda
What structure allows water to flow over it for the exchange of carbon dioxide for oxygen.
4
Segmentation is an advantage for annelid worms because it
is accompanied by the duplication of some internal organs
An earthworm uses its setae to
Grip the soil surface
One difference between leeches and polychaetes is that leeches
Do not have setae
All annelids in the classes Oligochaeta and Hirudinea have
A segmented coelom
What is the role of the typhlosole?
increase surface area available for digestion and absorption
