Cnidarian Test Question Preview (ID: 1386)

Marine Biology.

Which jellyfish body form is free swimming?
a) medusae
b) polyp

A nematocyst is
a) a stinging cell
b) a sensory organ
c) a flagellated cell

Where is a nematocyst located
a) at the end of the tentacle
b) at the end of the oral arm
c) in the gastric cavity

Which is false?
a) none of the answers are false
b) only a few nematocysts are poisonous to humans
c) neamtocysts are similar to coiled darts
d) nematocysts are loaded with toxins

Which animal belongs to the phylum Cnidaria?
a) all of the animals belong to the phylum cnidaria
b) anemones
c) jellyfish
d) comb jellies

Cnidaria have a radially symmetrical cup or bag like body made up of two layers of calls.
a) true
b) false

The largest class in phylum Cnidaria is class _________________ , which includes _________________.
a) Scyphozoa, jellyfish
b) Anthozoa, corals and anemones
c) Hydrozoa, siphonophore
d) Anthozoa, jellyfish

Fire Corals and siphonophores are in class
a) Hydrozoa
b) Anthozoa
c) Scyphozoa
d) Protozoa

The portoguese man of war is in class ________________ , jellfish are in class __________________ , and box jellyfish are in class ____________
a) Hydrozoa, Anthozoa, Scyphozoa
b) Cubozoa, Scyphozoa, Hydrozoa
c) Hydrozoa, Scyphozoa, Cubozoa
d) Scyphozoa, Scyphozoa, Scyphozoa

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

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