Zoology Final Exam

102 Questions | By Qwqwqwqw | Updated: Mar 21, 2022 | Attempts: 921

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1.

The structure of mollusks that forms the shell and houses the gills is the
- A.
  
  Mantle
- B.
  
  Gastrovascular Cavity
- C.
  
  Epidermis
- D.
  
  Visceral mass
- E.
  
  Periostracum
2.

The kidneys of mollusks both excrete waste and remove excess water, This type of kidney is called a
- A.
  
  Postnephridia
- B.
  
  Mesonephridia
- C.
  
  Metanephridia
- D.
  
  Protonephridia
- E.
  
  Notanephridia
3.

The portion of the radula that supports the teeth and is cartilaginous is called the
- A.
  
  Spicule
- B.
  
  Odontophore
- C.
  
  Radula Muscles
- D.
  
  Pen
- E.
  
  Collumella
4.

The structure of mollusks that forms the shell and houses the gills is the
- A.
  
  Mantle
- B.
  
  Gastrovascular cavity
- C.
  
  Epidermis
- D.
  
  Viscedral mass
- E.
  
  Periostracum
5.

The first larval stage that is typical of mollusks is the
- A.
  
  Planula
- B.
  
  Actinotroph
- C.
  
  Veliger
- D.
  
  Trochophore
- E.
  
  Glochidium
6.

A mollusks shell is made of three layers arranged from the outside to the inside
- A.
  
  Mantle layer, prismatic layer, periostracum
- B.
  
  Prismatic layer, periostracum, mantle layer
- C.
  
  Periostracum, prismatic layer, nacreous layer
- D.
  
  Nacreous layer, periostracum, mantle layer
- E.
  
  Periostracum, nacreous layer, prismatic layer
7.

The structure that is used for feeding in most mollusks is the
- A.
  
  Buccal cavity
- B.
  
  Mouth
- C.
  
  Radula
- D.
  
  Odontophore
- E.
  
  Gilles
8.

The body of a typical mollusk can be divided into two main sections the
- A.
  
  Head and foot
- B.
  
  Head and mantle
- C.
  
  Mantle cavity and foot
- D.
  
  Head-foot and mantle
- E.
  
  Head-foot and visceral mass
9.

Which of the following is not used by mollusks for the purpose of respiration?
- A.
  
  Gills
- B.
  
  Mantle
- C.
  
  Ctendia
- D.
  
  Lung
- E.
  
  Visceral mass
10.

Which of the following is not a modified version of the foot?
- A.
  
  Fins
- B.
  
  Tentacles
- C.
  
  Arms
- D.
  
  Siphon
11.

A mollusk that is a univalve with one opening to the shell or does not have a shell and shows torsion to some extent is in the class
- A.
  
  Scaphopoda
- B.
  
  Gastropoda
- C.
  
  Bivalvia
- D.
  
  Cephalopoda
- E.
  
  Mollusca
12.

Torsion is a process that rotates _______________ of the body of gastropods.
- A.
  
  Surface
- B.
  
  Mantle
- C.
  
  Viscera
- D.
  
  Tentacles
- E.
  
  Shell
13.

Some gastropods have a horny plate that covers the shell aperture; this structure is called a (an)
- A.
  
  Osmoradia
- B.
  
  Osphradia
- C.
  
  Operculum
- D.
  
  Olid
- E.
  
  Oocap
14.

The shells of gastropods usually twist to the right. This is known as
- A.
  
  A coil
- B.
  
  A whorl
- C.
  
  Sinistral
- D.
  
  Dextral
- E.
  
  Ambidextral
15.

The adaption of bivalves to a sedentary, filter feeding lifestyle that exploits the sand of a beach as a habitat has lead to the loss of the ______________ and the radula.
- A.
  
  Head
- B.
  
  Foot
- C.
  
  Mantle
- D.
  
  Visceral mass
- E.
  
  Gills
16.

The major group of gastropods known as the Pulmonates are more commonly known as
- A.
  
  Sea slugs and hares
- B.
  
  Limpets and conch
- C.
  
  Snails and slugs
- D.
  
  Albalones
- E.
  
  Nudibranchs
17.

A mollusk that has a shell of two valves and is usually a filter feeder is a
- A.
  
  Scaphopoda
- B.
  
  Gastropoda
- C.
  
  Bivalvia
- D.
  
  Cephalopoda
- E.
  
  Mollusca
18.

Where would you locate the pericardial cavity when dissecting a mollusk such as a clam?
- A.
  
  Between the mantle and the shell
- B.
  
  All of the area enclosed by the two shells and exposed when you open the shell
- C.
  
  The area around the heart
- D.
  
  The cavities inside the siphons
- E.
  
  The space inside the small tubules that form the gills
19.

Mollusks such as a clam breath by passing water in which of the following paths
- A.
  
  Incurrent siphon, suprabranchial chamber, gills, excurrent siphon
- B.
  
  Incurrent siphon, gills, suprabranchial chamber, excurrent siphon
- C.
  
  Incurrent siphon, gills, excurrent siphon
- D.
  
  Incurrent siphon, mantle, gills, excurrent siphon
- E.
  
  Incurrent siphon, gills, mantle, excurrent siphon
20.

A mollusk that is an active predator, has tentacles, and is marine would be in the class
- A.
  
  Scaphopoda
- B.
  
  Gastropoda
- C.
  
  Bivalvia
- D.
  
  Cephalopoda
- E.
  
  Mollusca
21.

The jet propulsion method of swimming that is seen in squid is accomplished by forcing water from the mantle cavity through a
- A.
  
  Siphuncle
- B.
  
  Radula
- C.
  
  Excurrent siphon
- D.
  
  Funnel
- E.
  
  Blow hole
22.

A cephalopod that has an external shell and represents a group that is mostly extinct would be a
- A.
  
  Giant squid
- B.
  
  Cuttlefish
- C.
  
  Nautilus
- D.
  
  Ammonoid
- E.
  
  Octopus
23.

The water current in the body of a cephalopod provides
- A.
  
  Oxygen for respiration
- B.
  
  Jet power for rapid locomotion
- C.
  
  A means of carrying wastes and gametes out of the body
- D.
  
  Only a and c are true
- E.
  
  All of the above are true
24.

When caphalopods hatch from their eggs, they are
- A.
  
  Trochophore larvae
- B.
  
  Glochidial parasites
- C.
  
  Helpless sessile larvae that must metamorphose into adult forms
- D.
  
  Juvenile that resemble small adults
- E.
  
  There is much variation and all of the above occur among the group
25.

The alternating longitudinal and circular muscle contractions that pass along the body to facilitate locomotion are called
- A.
  
  Progressive
- B.
  
  Peristaltic
- C.
  
  Hydrostatic
- D.
  
  Regressive
- E.
  
  Coelomic