1 Which class creataes a mantle cavity by pressing itself against a rock or othe
ID: 262926 • Letter: 1
Question
1
Which class creataes a mantle cavity by pressing itself against a rock or other hard surface?
Bivalvia
Gastropoda
Cephalopoda
Polyplacophora
2
Which of the following is not a member of phylum Cephalopoda?
squid
sea slug
octopus
cuttlefish
3
the dog tick is the vector for...
rocky mountain spotted fever
lyme disease
both
neither
4
Which of the following is a member of the subphylum Chelicerata?
blue crab
horseshoe crab
spider crab
all of the above
5
What role do copepods play in the environment?
primary consumers
food for secondary consumers
intermediate host for some nematodes
all of the above
A.Bivalvia
B.Gastropoda
C.Cephalopoda
D.Polyplacophora
Explanation / Answer
1. Bivalvia creataes a mantle cavity by pressing itself against a rock or other hard surface. Hence, option A , is correct.
2. Cephalopoda are characterized by bilateral body symmetry. Sea squid is not a cephalopoda.Hence, option “b” is correct
3. the dog tick is the vector for rocky mountain spotted fever. Hence, option “a” is correct.
4. Horseshoe crabs superficially resemble crustacean but it is not a custeacean . IT belong to sub-phylum Chelicerata. Hence, option “b” is correct.
5.They are primary consumer. Hence, option “a” is correct.
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