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WorksheetsMarine Bio B Exam Review - Mollusca/Porifera
Total questions: 79
Worksheet time: 41mins
What type of symmetry do molluscs exhibit?
Bilateral symmetry
Asymmetry
Radial symmetry
Spherical symmetry
The shells of molluscs are composed of...
Silica
Cellulose
Calcium carbonate
Silica carbonate
The class of molluscs that are said to be "head-footed" are...
Gastropods
Cephalopods
Bivalves
Braineopods
Bivalves use their gills to...
Breathe ONLY
Filter food ONLY
Breathe AND filter food
Bivalves don't have gills
Nudibranchs are also known as...
Sea snails
Sea slugs
Chitons
Shipworms
Cephalopods have a single large brain; other molluscs have several "local brains" called...
Ganglia
Mantles
Radulas
Nerve nets
The only cephalopod that doesn't have any kind of shell at all is the...
Nautilus
Octopus
Squid
Cuttlefish
Which bivalve makes the types of pearls that are used for jewelry?
Clams
Oysters
Mussels
Scallops
The structure unique to molluscs is a ribbon-like band of teeth called a...
Radula
Foot
Mantle
Ganglion
The only cephalopod that has an external shell is the...
Nautilus
Octopus
Squid
Cuttlefish
Which group of molluscs does NOT have a radula?
Gastropods
Cephalopods
Bivalves
All molluscs have a radula
"Mollusca" is a....
Domain
Kingdom
Phylum
Class
Which of the following organisms is best adapted for swimming?
Squid
Octopus
Cuttlefish
Nautilus
What are the three main groups of Mollusks?
Gastropods
Cephalopods
Annelids
Myriapods
Bivalves
To which group of mollusks does this squid belong?
cephalopod
bivalve
gastropod
Which is the group of mollusks that has tentacles with suckers?
Cephalopods
Bivalves
Gastropods
Myriapods
To which group of mollusks this clam belong?
Gastropods
Cephalopods
Bivalves
Arthropods
Which is the group of mollusks that has the shell divided into two valves?
Gastropods
Cephalopods
Bivalves
Porifera
To which group of mollusks this marine snail belong?
Gastropods
Cephalopods
Bivalves
The vestigial shell of a squid is called the
siphon
ink sac
pen
mantle
A squid has multiple _______, but only 2 ______.
arms, tentacles
tentacles, arms
The organism in the photo is a
bivalve
gastropod
cephaopod
chitin
When all else fails, some mollusks use this to confuse their prey and escape
siphon
ink sac
pen
chitin
A squid captures its prey first using its
long suction cupped tentacles
suction cupped arms
beak
Ink trail
Squids move by
walking/creeping on their tentacles
shortening and lengthening their tentacles
jet populsion
fins
Chromatophores are cells that cannot change color
True
False
The Class Bivalvia Consists of
Scallops, Clams, Oysters and mussels
Polychaetes, Earthworms, Peanut worms and Turbellarians
Starfish, Sea Stars, Sea lilies and Ophiuroids
Crabs, Shrimp and Sea Spiders
Cuttlefish have a -
Eight arms no tentacles, globular, sac like body, vestigial shell. Octopus vulgaris.
calcified, internal, chambered, straight, seprate shell or it may be reduced or lost
A Radula is
an organ of defense
an organ for locomotion
an organ to acquire food
a support structure for the mouth
The hemal (circulatory) system of a mollusc is made up of
consists of tracheal tubes and a heart that pumps hemocoel
a heart, a dorsal aorta, blood vessels, blood and a hemocoel.
Polyplacophoran means a bearer of _____________ plates
few
many
This is the outer fold of skin on molluscs, and is responsible for excreting the substance that forms the mollusc's shell.
Radula
Mantle
Foot
Ctenidia
Cockle
How do bivalves eat?
Filter feeders
Radula
Tentacles
What class of molluscs does the nautilus belong to?
Bivalvia
Gastropoda
Cephalopoda
Cnidaria
Squids are examples of
vertebrates (animals with a backbone).
invertebrates (animals without a backbone).
Other organisms that are in the same Phylum Mollusca as squid are (choose all that apply)
Roaches
Clams
Snails
Oysters
Squid belong to the Class ________ along with the octopus and chambered nautilus.
Cephalopoda
Crustacea
Insecta
Vertebrata
The large majority of mollusks today are shaped like snails. But, the protective shells they evolved have come at a cost. Because of their weight, snails sacrificed ________ for safety.
comfort
speed
protection
What is the soft body that covers the body of a mollusk called?
foot
mantle
siphon
ink sac
How many arms and tentacles does the squid have?
8 arms, 2 tentacles
10 arms, 2 tentacles
2 arms, 8 tentacles
5 arms and 5 tentacles
True or False. Squids have very large eyes similar in structure to human eyes.
True
False
What do squids use to breathe?
lungs
gills
air sacs
three-chambered heart
Choose the true statement about squids.
Squids are fast predators.
Squids are herbivores (plant-eaters).
Squids breathe using lungs.
Squids have no defense mechanisms to hide from predators.
What structure do squids have to help them crush their food before it travels through the esophagus to the stomach?
teeth
fangs
beak
scraping tongue
Choose all the safety equipment you will wear for our dissection.
goggles
gloves
lab apron
HAZMAT suit
In order to see the internal anatomy, you will carefully cut the _____ with dissecting scissors and pin it open like this.
tentacle
mantle
siphon
beak
The internal shell of the squid is called the
pen.
pencil.
bivalve.
siphon.
14
Anterior Adductor Muscle
Gills
Intestine
Mantle
Mouth
8
Gills
Intestine
Mantle
Mouth
Pericardial Area (heart)
9
Intestine
Mantle
Mouth
Pericardial Area (heart)
Siphons
16
Mantle
Mouth
Pericardial Area (heart)
Siphons
Stomach
13
Mouth
Pericardial Area (heart)
Siphons
Stomach
Umbo
2
Siphons
Intestine
Mantle
Mouth
Pericardial Area (heart)
15
Stomach
Mantle
Mouth
Pericardial Area (heart)
Siphons
5
Umbo
Mouth
Pericardial Area (heart)
Siphons
Stomach
How do sponges obtain food?
filter it from the water
grasp it with tentacles
pry it apart with tube feet
put it in their mouth with jointed legs
The small "hairs" inside the sponge that move water are called...
Flagella
Collar cells
Osculum
Pores
The cells inside the sponge that have flagella (and absorb food) are called...
Collar cells
Flagella
Osculum
Pores
Which one is NOT true about sponges?
They are multicellular
They are autotrophs
They are eukaryotes
They are the simplest animals on Earth
True/False: Sponges reproduce by both sexual and asexual reproduction.
True
False
Label A points to...
collar cells
incurrent pores
spicules
epithelial cells
Label B points to...
collar cells
incurrent pores
spicules
epithelial cells
Label C points to...
collar cells
incurrent pore
spicules
epithelial cells
Label D points to...
collar cells
osculum
spicules
epithelial cells
