WorksheetsCephalopods
Total questions: 13
Worksheet time: 10mins
Name
Class
Date
1.
Cephalopods move by
a)
using jet propulsion
b)
waving their tentacles back and forth.
c)
crawling along on a single muscular foot.
d)
clapping their shells together.
2.
Which of these cephalopods has an external shell?
a)
cuttlefish
b)
squid
c)
octopus
d)
nautilus
3.
Which of the following is a function of the mantle in many mollusks?
a)
Mantle covers the internal organs.
b)
Mantle enables the mollusk to move.
c)
Mantle helps the mollusk digest food.
d)
Mantle removes wastes.
4.
Among mollusks, which is a special characteristic of cephalopods?
a)
an open circulatory system.
b)
a two way digestive system.
c)
the only mollusk class with gills.
d)
a closed circulatory system.
5.
What does Cephalopod mean?
a)
means "2-shells"
b)
means "head-foot"
c)
means "stomach-foot"
d)
means "soft bodied"
6.
Cephalopods use a ________ to bite
a)
gills
b)
beak
c)
visceral mass
7.
Structures on cephalopods that act as a water pump for jet propulsion are called
a)
siphons
b)
gills
c)
radulas
d)
trochopores
8.
Which group of cephalopods can inject prey with venom?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
9.
Which group of cephalopods can have barbed / clawed tentacles?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
10.
Which group of cephalopods has ability to flatten body to fit in small spaces and change skin to blend with surroundings?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
11.
Which group of cephalopods has a pen?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
12.
The cells in skin of cephalopods that allow them to change colors are called
a)
pigmentocytes
b)
chromatophores
c)
dermatophores
d)
branchiocytes
13.
How many chambers in a cephalopod heart?
a)
1
b)
2
c)
3
d)
4
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