Q.
Which of the following animal groups is incorrectly paired with its characteristic?
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a
Porifera : Central cavity called spongocoel lined by choanocytes
b
Mollusca : The body is covered by a chitinous exoskeleton
c
Cnidaria : Gastro-vascular cavity with a single opening, mouth on hypostome
d
Arthropoda : Jointed appendages help in locomotion
answer is B.
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Detailed Solution
Body is covered by a calcareous shell in molluscs. Body is covered by chitinous exoskeleton in arthropods.
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