Lab 5 Mollusca - EVERYTHING
1. CLASSIFICATION: Only answer the phyla, classes, subclasses and other classification that you are responsible
for knowing this week in lab. *HINT: check the worksheet.
A) Phylum Annelida
B) Phylum Mollusca
C) Phylum Nematoda
D) Class Monoplacophora
E) Class Pulmonata
F) Class Polyplacophora
G) Order Cephalopoda
H) Class Scaphopoda: B)Phylum Mollusca
F) Class Polyplacophora
H)Class Scaphopoda
2. ORGANIZATION:At what level is the basic body plan organized? (e.g. cell, tissue, organ, etc.)
A) Tissue level
B) Organ level
C) none of the above: B)Organ level
3. EMBRYONIC DEVELOPMENT:List the characteristics found during the for- mation of the blastula (e.g.
triploblastic, deuterostome, etc.).
A) Diploblast B)Triploblast
C)Protostome D)Deuterostome
E)Acoelomate
F)Pseudocoelomate
G) Eucoelomate (or coelomate)
H) No embryonic development: B)Triploblast C)Protostome
G) Eucoelomate (or coelomate)
4. SYMMETRY:What type of symmetry is found in the basic body plan? (e.g. asymmetrical, radial. etc.)
A) Asymmetry
B) Radial symmetry
, Lab 5 Mollusca - EVERYTHING
C) Pentaradial symmetry
D) Bilateral symmetry: D)Bilateral symmetry
5. SKELETON/SUPPORT:List the structures or ways this group of animals support themselves (e.g. hydrostatic
skeleton, exoskeleton, etc.).
A) Hydrostatic skeleton B)Endoskeleton
C)Exoskeleton: C)Exoskeleton
6. MOVEMENT/LOCOMOTION:What structures are used to help them move around their environment?(e.g. types
of muscles, jointed legs, cilia, etc.).
A) Cilia
B) Moves using flagella
C) Jet propulsion
D) Pedal disk E)Hydrostatic
skeleton
F)Muscular foot via pedal waives of muscle contraction: C)Jet propulsion E)Hydrostatic skeleton
F)Muscular foot via pedal waves of muscle contraction
7. SENSORY/NERVOUS:Describe the nervous system (i.e. ganglia, CNS, ven- tral nerve cord, etc.) and any sensory
specializations found in the group (e.g. auricles, eyes, antennae, etc.).
A) Nerve net connecting nerve cells and neurons B)Ocelli
C) Cerebral ganglia
D) Ventral nerve cord
E) Dorsal nerve cord
F)Cephalization G)Auricles
H) Giant fibers: B)Ocelli
C) Cerebral ganglia
D) Ventral nerve cord
F)Cephalization
H) Giant fibers
Ganglia forms a true brain in cephalopods.
In other molluscs, the ganglia are paired and connected by nerve fibers.
, Lab 5 Mollusca - EVERYTHING
8. CIRCULATION:Describe the circulatory system (e.g. diffusion, open system, etc.).
A) Diffusion
B) Open circulatory system
C) Closed circulatory system D)3-chamber
heart
E) 4-Chamber heart
F) No circulation at all: B)Open circulatory system
C) Closed circulatory system D)3-
chamber heart
3-chamber heart is only in some molluscs. Most have a single ventricle and a single auricle/atrium.
9. DIGESTION/FEEDING:Describe the digestive process (e.g. incomplete and extracellular) and any specializations
for feeding (e.g. cnidocytes, tentacles, etc.).
A) Incomplete gut
B) Complete gut (mount and anus) C)Intracellular
digestion only D)Extracellular digestion only
E) Extra and intracellular digestion
F) Labial palps: B)Complete gut (mount and anus) D)Extracellular
digestion only
F) Labial palps
Labial palms are in bivalves like clams.
10.EXCRETORY/OSMOREGULATION:List how the group eliminates waste from their systems (e.g. diffusion,
nephridia, Renette cells, Malpighian tubules etc.).
A) Diffusion
B)Protonephridia = Flame cell C)Metanephridia
D) Urea
E) Malpighian tubules
F) Kidneys: C)Metanephridia
1. CLASSIFICATION: Only answer the phyla, classes, subclasses and other classification that you are responsible
for knowing this week in lab. *HINT: check the worksheet.
A) Phylum Annelida
B) Phylum Mollusca
C) Phylum Nematoda
D) Class Monoplacophora
E) Class Pulmonata
F) Class Polyplacophora
G) Order Cephalopoda
H) Class Scaphopoda: B)Phylum Mollusca
F) Class Polyplacophora
H)Class Scaphopoda
2. ORGANIZATION:At what level is the basic body plan organized? (e.g. cell, tissue, organ, etc.)
A) Tissue level
B) Organ level
C) none of the above: B)Organ level
3. EMBRYONIC DEVELOPMENT:List the characteristics found during the for- mation of the blastula (e.g.
triploblastic, deuterostome, etc.).
A) Diploblast B)Triploblast
C)Protostome D)Deuterostome
E)Acoelomate
F)Pseudocoelomate
G) Eucoelomate (or coelomate)
H) No embryonic development: B)Triploblast C)Protostome
G) Eucoelomate (or coelomate)
4. SYMMETRY:What type of symmetry is found in the basic body plan? (e.g. asymmetrical, radial. etc.)
A) Asymmetry
B) Radial symmetry
, Lab 5 Mollusca - EVERYTHING
C) Pentaradial symmetry
D) Bilateral symmetry: D)Bilateral symmetry
5. SKELETON/SUPPORT:List the structures or ways this group of animals support themselves (e.g. hydrostatic
skeleton, exoskeleton, etc.).
A) Hydrostatic skeleton B)Endoskeleton
C)Exoskeleton: C)Exoskeleton
6. MOVEMENT/LOCOMOTION:What structures are used to help them move around their environment?(e.g. types
of muscles, jointed legs, cilia, etc.).
A) Cilia
B) Moves using flagella
C) Jet propulsion
D) Pedal disk E)Hydrostatic
skeleton
F)Muscular foot via pedal waives of muscle contraction: C)Jet propulsion E)Hydrostatic skeleton
F)Muscular foot via pedal waves of muscle contraction
7. SENSORY/NERVOUS:Describe the nervous system (i.e. ganglia, CNS, ven- tral nerve cord, etc.) and any sensory
specializations found in the group (e.g. auricles, eyes, antennae, etc.).
A) Nerve net connecting nerve cells and neurons B)Ocelli
C) Cerebral ganglia
D) Ventral nerve cord
E) Dorsal nerve cord
F)Cephalization G)Auricles
H) Giant fibers: B)Ocelli
C) Cerebral ganglia
D) Ventral nerve cord
F)Cephalization
H) Giant fibers
Ganglia forms a true brain in cephalopods.
In other molluscs, the ganglia are paired and connected by nerve fibers.
, Lab 5 Mollusca - EVERYTHING
8. CIRCULATION:Describe the circulatory system (e.g. diffusion, open system, etc.).
A) Diffusion
B) Open circulatory system
C) Closed circulatory system D)3-chamber
heart
E) 4-Chamber heart
F) No circulation at all: B)Open circulatory system
C) Closed circulatory system D)3-
chamber heart
3-chamber heart is only in some molluscs. Most have a single ventricle and a single auricle/atrium.
9. DIGESTION/FEEDING:Describe the digestive process (e.g. incomplete and extracellular) and any specializations
for feeding (e.g. cnidocytes, tentacles, etc.).
A) Incomplete gut
B) Complete gut (mount and anus) C)Intracellular
digestion only D)Extracellular digestion only
E) Extra and intracellular digestion
F) Labial palps: B)Complete gut (mount and anus) D)Extracellular
digestion only
F) Labial palps
Labial palms are in bivalves like clams.
10.EXCRETORY/OSMOREGULATION:List how the group eliminates waste from their systems (e.g. diffusion,
nephridia, Renette cells, Malpighian tubules etc.).
A) Diffusion
B)Protonephridia = Flame cell C)Metanephridia
D) Urea
E) Malpighian tubules
F) Kidneys: C)Metanephridia
