Zoology Final Exam
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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
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