WorksheetsCephalopods
Total questions: 22
Worksheet time: 14mins
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.
Which group of cephalopods bites prey in the head?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopus
6.
What does Cephalopod mean?
a)
means "2-shells"
b)
means "head-foot"
c)
means "stomach-foot"
d)
means "soft bodied"
7.
Mollusk's tongue-like strip covered with teeth that point backwards is called the
a)
gills
b)
beak
c)
visceral mass
d)
radula
8.
Structures on cephalopods that act as a water pump for jet propulsion are called
a)
siphons
b)
gills
c)
radulas
d)
trochopores
9.
Which group of cephalopods is nocturnal?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
10.
What Cephalopod superorder does the picture belong to?
a)
Octopodiformes
b)
Nautiloidea
c)
Decapodaformes
11.
The modified arm of male cephalopods that is used for reproduction is called the
a)
spermatophore
b)
hectocotylus
c)
crop
d)
chromatophore
12.
Which group of cephalopods can inject prey with a neurotoxic venom?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
13.
Which group of cephalopods can have barbed / clawed tentacles?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
14.
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
15.
The sperm packets deposited into the mantle by male cephalopods is called the
a)
hectocotylus
b)
spermatophore
c)
chromatophore
d)
cuttlebone
16.
The similarity between the vertebrate and cephalopod eye is a great example of
a)
convergent evolution
b)
divergent evolution
c)
macroevolution
d)
speciation
17.
Which group of cephalopods has a pen?
a)
Cuttlefish
b)
Nautilus
c)
Squid
d)
Octopuses
18.
The cells in skin of cephalopods that allow them to change colors are called
a)
pigmentocytes
b)
chromatophores
c)
dermatophores
d)
branchiocytes
19.
Which part of the heart is responsible for moving blood through the gills of cephalopods?
a)
branchial
b)
auricle
c)
ventricle
20.
How many chambers in a cephalopod heart?
a)
1
b)
2
c)
3
d)
4
21.
The main difference between the two superorders in Subclass Coleoidea is
a)
number of eyes
b)
number of arms
c)
presence or absence of shell
d)
presence of absence of fins
22.
Ancestral cephalopods are known as
a)
Nautiluses
b)
Giant Octopods
c)
Jellyfish
d)
Ammonites
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