Site MapHelpFeedbackMolluscs Quiz
Molluscs Quiz
(See related pages)



1

What does the name “mollusca” mean?
2

What are the defining characteristics of the Phylum Mollusca?
3

Define or identify: odontophore, ctenidia, osphradium, hemocoel.
4

The Phylum Mollusca is the _____________ largest phylum of invertebrates.
5

The molluscan coelom is restricted to the space around the _______ and __________.
6

How does a mollusc use its radula in feeding?
7

What does the name “polyplacophora” mean? What is the common name of these animals?
8

What is the defining characteristic of the Class Polyplacophora?
9

Where do chitons live (habitat)?
10

What is the girdle on a chiton?
11

Where is the mantle cavity located in chitons? How does water flow through it?
12

What are aesthetes? Why are they important? (function?)
13

What does the name “aplacophora” mean?
14

What is the defining characteristic of the Class Aplacophora?
15

Where do aplacophorans live? (habitat?) Why have they left no fossil record?
16

What does the name “monoplacophora” mean?
17

What are the defining characteristics of the Class Monoplacophora?
18

Prior to 1952, monoplacophorans were known only from the fossil record. What happened in 1952? where?
19

Where do monoplacophorans live? (habitat?)
20

Why are monoplacophorans important in the evolution of the molluscs?
21

What does the name “gastropoda” mean?
22

What are the defining characteristics of the Class Gastropoda?
23

Which class of molluscs has the largest number of living species?
24

What habitats do gastropods occupy?
25

Distinguish between dextral and sinestral shells.
26

What structures are reduced or absent on the one side of the gastropod body (as a result of coiling and torsion)?
27

Define torsion. Note: torsion and coiling are 2 separate and independent processes.
28

What is the adaptive significance of torsion? (Advantages and disadvantages?)
29

How do most gastropod species move?
30

What does the name “prosobranchia” mean?
31

What is the defining characteristic of the Subclass Prosobranchia (in the Class Gastropoda)?
32

Where do most prosobranchs live? (habitat?)
33

How are prosobranchs related to the other 2 gastropod subclasses?
34

How does water flow in the primitive prosobranchs (archaeogastropods) differ from that in the more advanced ones (mesogastropods and neogastropods)? What is the habitat of archaeogastropods?
35

Distinguish between monopectinate and bipectinate gills (ctenidia).
36

What does the name “opisthobranchia” mean?
37

What is the defining characteristic of the Subclass Opisthobranchia (in the Class Gastropoda)?
38

What characteristics distinguish opisthobranchsfrom prosobranchs?
39

What are cerata? rhinophores?
40

What does the name “pulmonata” mean? What is a pneumostome?
41

What is the defining characteristic of the Subclass Pulmonata in the Class Gastropoda?
42

Where do pulmonate snails (and slugs) live? (habitat?)





To learn more about the book this website supports, please visit its Information Center.
(c)2003 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Castro Marine BiologyOnline Learning Center

Home > Chapter 7 > Molluscs Quiz