Chapter 26:
Sponges, Cnidarians, Flatworms, and Roundworms
Practice Test
1.
Sponges can move from place to place only during their _______ stage.
a.
larval
b.
adult
c.
medusa
d.
hermphrodite
Hint
2.
Cnidarians get oxygen by __________.
a.
means of lungs
b.
filter feeding
c.
means of gills
d.
diffusion
Hint
3.
A structure that conducts nerve impulses from all parts of the body, but has no control center is called a ___________.
a.
nerve net
b.
nervous system
c.
brain
d.
nematocyst
Hint
4.
Which of the following has more complex structures?
a.
jellyfish
b.
coral
c.
sponge
d.
flatworms
Hint
5.
Which of the following worms do NOT cause disease in humans?
a.
tapeworms
b.
flukes
c.
planarians
d.
roundworms
Hint
6.
Eating unwashed, uncooked vegetables may result in __________.
a.
Trichinella
infection
b.
Pinworms
c.
Hookworms
d.
Ascaris
infection
Hint
7.
The most common human roundworm parasites are __________.
a.
Ascaris, hookworms, Trichinella and pinworms
b.
pinworms, hookworms and tapeworms
c.
hookworms, tapeworms and flukes
d.
flukes and tapeworms
Hint
8.
The knob-shaped head of a tapeworm is called the __________.
a.
fluke
b.
polyp
c.
scolex
d.
proglottid
Hint
9.
An individual that produces both eggs and sperm is called a __________.
a.
medusa
b.
proglottid
c.
hermaphrodite
d.
polyp
Hint
10.
A stage of a jellyfish that has a shape like an umbrella with the tentacles hanging down is called the __________.
a.
zygote
b.
larva
c.
polyp
d.
medusa
Hint
11.
The Portuguese man-of-war is an example of a __________.
a.
medusa
b.
scyphozoan
c.
hydrozoan
d.
polyp
Hint
12.
Scientists infer that sponges may have evolved from __________.
a.
flagellated protists
b.
jellyfish
c.
hydra
d.
coral
Hint
13.
Which describes the route water takes through a sponge?
a.
in through pore cells and out through the osculum
b.
in through the osculum and out through the pore cells
c.
in through the osculum and out through the amoebocytes
d.
in through the amoebocytes and out through the osculum
Hint
14.
Skeletons of sponges are made of __________.
a.
spongin or spicules
b.
spongin and collar cells
c.
spongin and amoebocytes
d.
spongin and epithelium
Hint
15.
The parasitic worm found in improperly cooked pork that might cause disease is __________.
a.
Ascaris
b.
Trichinella
c.
the hookworm
d.
the pinworm
Hint
