Unit 4: Assignment 2: Objective 2
Use chapter 16 and the notes to answer the following questions.
Question 1 1 pts
Which class represents the following description: Body bilaterally symmetrical with broad, flat foot; A single dome-shaped shell. Five or six pairs of gills in shallow mantle cavity. Radula present. Separate sexes. Example: Neopilina
Solenogastres
Caudofoveata
Polyplacophora
Monoplacophora
Question 2 1 pts
Which class represents the following description: Wormlike, shell, head, and excretory organs absent; radula usually absent. Mantle covered with scales or spicules; Hermaphrodite. Example: Neomenia
Polyplacophora
Caudofoveata
Solenogastres
Scaphopoda
Question 3 1 pts Skip to question text.
Which class represents the following description:
Wormlike. Shell, head and excretory organs absent. Radula usually present. Mantle with chitinous cuticle and calcareous scales. Sexes separate. Was united with solenogasters but now classified separately. Examples Chaetoderma, Limifossor
Monoplacophora
Solenogasters
Polyplacophora
Caudofoveata
Question 4 1 pts
Which class represents the following description: Chitons are somewhat flattened with 7or 8 dorsal plates. Most prefer rocky intertidal surfaces. Chiton radula is reinforced with iron mineral. Scrapes algae from the rocks. Example: Chitons
Solenogastres
Polyplacophora
Monoplacophora
Caudofoveata
Question 5 1 pts
Chaetoderma and Limifossor are examples of the class Monoplacophora.
True
False
Question 6 1 pts
Neomenia is an example of an organism in the class Solenogastres
True
False
Question 7 1 pts
Neopilina is an example of a species in the class Polyplacophora.
True
False
Question 8 1 pts
Chitons are examples of the class Caudofoveata
True
False
Question 9 1 pts
Chiton Anatomy Picture.jpg
Name the class:
Solenogastres
Caudofoveata
Monoplacophora
Polyplacophora
Question 10 1 pts Skip to question text.
Which Class is represented by the following description:
Tusk Shells. Body enclosed in a one piece, tubular shell open at both ends.
Conical foot; Mouth with radula and tentacles, head absent. Sexes are separate. Example: Dentalium
Gastropoda
Cephalopoda
Bivalvia
Scaphopoda
Question 11 1 pts Skip to question text.
Which class is represented by the following description:
Snails, slugs, conch, whelks, and others. Body asymmetrical, usually in a coiled shell (shell uncoiled or absent in some); Head well developed, with radula; foot large and flat; one or two gills, or with mantle modified into secondary gills or lung; dioecious or monoecious. Examples: Busycon, Physa, Helix, Apylsia.
Bivalvia
Scaphopoda
Gastropoda
Cephalopoda
Question 12 1 pts Skip to question text.
Which class is represented by the following description:
Body enclosed in a two-lobed mantle; shell of two lateral valves of variable size and form, with dorsal hinge; cephalization much reduced; no radula; foot usually wedge-shaped; gills plate-like; sexes usually separate. Examples: Anodonta, Venus, Tagelus, Teredo.
Cephalopoda
Bivalvia
Scaphopoda
Gastropoda
Question 13 1 pts Skip to question text.
Which class is represented by the following description:
Squids, nautiloids, and octopuses. Shell often reduced or absent; head well developed with eyes and radula; foot modified into arms or tentacles; siphon present; sexes separate. Examples: Logio, Octopus, Sepia.
Bivalvia
Gastropoda
Scaphopoda
Cephalopoda
Question 14 1 pts
Dentalium is in which class of Mollusc
Bivalvia
Cephalopoda
Gastropoda
Scaphopoda
Question 15 1 pts
Busycon, Physa, Helix, Apylsia are examples of which class of Mollusc
Gastropoda
Scaphopoda
Cephalopoda
Bivalvia
Question 16 1 pts
Anodonta, Venus, Tagelus, Teredo are in this class of Mollusc
Scaphopoda
Bivalvia
Cephalopoda
Gastropoda
Question 17 1 pts
Logio, Octopus, Sepia are examples of this class.
Cephalopoda
Bivalvia
Gastropoda
Scaphopoda