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Cnidarian Test
Test Description: Marine Biology
Instructions: Answer all questions to get your test result.
1) Which jellyfish body form is free swimming?
A
polyp
B
medusae
2) A nematocyst is
A
a sensory organ
B
a flagellated cell
C
a stinging cell
3) Where is a nematocyst located
A
in the gastric cavity
B
at the end of the oral arm
C
at the end of the tentacle
4) Which is false?
A
only a few nematocysts are poisonous to humans
B
none of the answers are false
C
neamtocysts are similar to coiled darts
D
nematocysts are loaded with toxins
5) Which animal belongs to the phylum Cnidaria?
A
all of the animals belong to the phylum cnidaria
B
anemones
C
jellyfish
D
comb jellies
6) Cnidaria have a radially symmetrical cup or bag like body made up of two layers of calls.
A
true
B
false
7) The largest class in phylum Cnidaria is class _________________ , which includes _________________.
A
Anthozoa, jellyfish
B
Hydrozoa, siphonophore
C
Anthozoa, corals and anemones
D
Scyphozoa, jellyfish
8) Fire Corals and siphonophores are in class
A
Anthozoa
B
Protozoa
C
Hydrozoa
D
Scyphozoa
9) The portoguese man of war is in class ________________ , jellfish are in class __________________ , and box jellyfish are in class ____________
A
Scyphozoa, Scyphozoa, Scyphozoa
B
Cubozoa, Scyphozoa, Hydrozoa
C
Hydrozoa, Anthozoa, Scyphozoa
D
Hydrozoa, Scyphozoa, Cubozoa
10) Difference between comb jellies and jellyfish include (choose all that apply)
A
Comb jellies have much more powerful stinging tentacles
B
Comb jellies have cilia on their surface and lack the characteristic cnidarians body shape
C
None of the answers are correct
*select an answer for all questions
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