Capter 13 Mollusk And Annelids Flashcards
0
Q
Both mollusks and segmented worms have an open circulatory system. T/F
A
False
1
Q
Mollusks and segmented worms share a common ancestor. T/F
A
True
2
Q
All mollusk have shells. T/F
A
False
3
Q
Cephalopods are the largest group of mollusks. T/F
A
False
4
Q
Leeches can live only by sucking blood. T/F
A
False
5
Q
Leeches secrete a substance that prevents blood from clotting. T/F
A
True
6
Q
Segmented worms have a body space for organs. T/F
A
True
7
Q
What class contains clams and scallops?
A
Bivalves
8
Q
What class do most members have large heads and no shell?
A
Cephalopods
9
Q
What class contains slugs and snails?
A
Gastropods
10
Q
What is a gizzard?
A
An organ the earthworms use to grind soil.
