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Phylum Arthropoda - Questions and Answers

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246. Maggot is
A. Larva of Anopheles/Culex
B. Pupa of Housefly
C. Larva of Housefly
D. Larva of Dragonfly
Explanation:
247. Phylum mollusca can be distinguished from other invertebrates by the presence of
A. Bilateral symmetry and exoskeleton
B. Shell and non-segmented body
C. Mantle and non-segmented body
D. Mantle and gills
Explanation:
248. Devil Fish and Sea Hare are
A. Coelenterates
B. Marine fish and mammal
C. Crustaceans
D. Molluscs
Explanation:
249. Statement (S). in many gastropods, the anus and mantle cavity are placed anteriorly above the head. Reason (R). During embryonic development, in many gastropods one side of the visceral mass grows faster than the other side. The uneven growth rotates the visceral organs upto 180° in many gastropods
A. Both S and R are true and R explains S
B. Both S and R are true but R cannot explain S
C. Only S is correct R is wrong
D. Both S and R are wrong
Explanation:
250. Respiratory tree occurs in
A. Sea Fan
B. Sea Lily
C. Sea Cucumber
D. Sea Urchin
Explanation:
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