Chapter 34-1

Question 1

Phylum Mollusca has what 3 classes?

Answer 1

Bivalia
Gastropoda
Cephalopoda

Question 2

Class bivalvia contains which animals?

Answer 2

clams, oysters, mussels & scallops (shellfish)

Question 3

Class gastropoda contains which animals?

Answer 3

snails & slugs

Question 4

Class cephalopoda contains which animals?

Answer 4

squid & octopus

Question 5

What are the characteristics of mollusks?

Answer 5

more than 100,000 species (#2)
"soft body"
3 part body 
blue hemocyanin in blood
trocophore & veliger larvae
radula on grazers

Question 6

What are molluska’s shells like?

Answer 6

mantle is tissue that secretes shell

most of shell is calcium carbonate

Question 7

What is the structure of shellfish?

Answer 7

2 shells secreted by mantle
dorsal hinge closed by adductor muscles
anterior muscular foot

Question 8

How do shellfish gather food?

Answer 8

gill mucous

Question 9

Characteristics of mussels?

Answer 9

saltwater/freshwater habitats
elongated shell
attach to intertidal structure by strong threads secreted from the mantle

Question 10

What is the problem w/ zebra mussels?

Answer 10

clog water intakes & damage equipment by attaching to boat motors & hard surfaces
smother native mussels & litter beaches w/ sharp smells