Additional info - molluska quiz

Question 1

Two distinct features of mollusks:

1. _______ organs are located in a _______ mass enclosed by a _______ mantle
2. ______ muscular foot that serves in _______ and _______

Answer 1

internal, visceral, dorsal

ventral, locomotion, feeding

Question 2

Polyplacophora - aka ______

Answer 2

chitons

Question 3

Polyplacophora:

• small group of _________ flattened ______ (live where) mollusks
• abundant in _______ zones along rocky coasts

Answer 3

dorso-ventrally
marine
intertidal

Question 4

Polyplacophora

Ventral foot is a broad, flat, creeping sole and the shell is divided into _____ partially overlapping plates.

Answer 4

8

Question 5

Three important characteristics in gastropods:

1. well-developed _____
2. Muscular creeping or ______ foot
3. Single ________ shell of _____ and organic matter

Answer 5

head
swimming
asymmetrical
CaCO3

Question 6

What is a radula used for?

Answer 6

Feeding - scraping algae off a hard surface

Question 7

Bivalves:

- differ from other mollusks by having a _______ compressed shell of ____ valves hinged along their ______ margin

Answer 7

laterally
2
dorsal

Question 8

Subclass lamellibranchia:

• __% of bivalves
• ____ teeth
• contain who?

Answer 8

98
hinge
clams, mussels, scallops, oysters
freshwater clams (unionid)

Question 9

Subclass protobranchia

• ______ group
• clams - small _____ (live where)

Answer 9

primitive

marine

Question 10

Subclass septibranchia

• rare
• live in ____, or bore into ____, ____ or _____ shells

Answer 10

mud

rock, coral, clam

Question 11

Cephalopods have four major features:

1. All possess a well-developed ____ and complex ___
2. The ________ portion of the foot is modified into a circle of prehensile, muscular _____ and ______ taht surround the mouth
3. muscular ______ apparatus cotnaing a ____-like jaw and a _____
4. Locomotion involves water taken intot he mantle cavity - exhalation furnishes a ___ _______

Answer 11

brain, NS
anterior, arms, tentacles
buccal, beak-like, radula
jet propulsion

Question 12

Nautilus:

-regulates ________ by altering the relative volumes of liquid and gas in the ______ through action of the ________

Answer 12

buoyancy
camerae
siphuncle

Question 13

Cuttlefish:

- possesses an internal shell called the _______

Answer 13

cuttlebone

Question 14

Cuttlefish have an ________ swimming strategy

Answer 14

epibenthic

Question 15

Octopuses generally swim by ___ ______, but crawl on the bottom in search of prey

Answer 15

jet propulsion