The black widow and the brown recluse are dangerous spiders.
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Q2: Crabs,lobsters,and true shrimps belong to the malacostracan
Q3: Scorpions respire by means of book lungs.
Q4: Diversity in arthropods is mainly due to
Q5: Arthropods are successful because they have
A)a very
Q6: No other group of animals is more
Q7: Mites and ticks differ from all other
Q8: Horseshoe crabs
A)are extinct.
B)are poisonous to humans.
C)live in
Q9: The trilobites are
A)freshwater dwellers.
B)terrestrial crustaceans.
C)aquatic insects.
D)extinct.
Q10: Wing muscles of insects are termed indirect
Q11: The centipedes are herbivorous,but the millipedes are
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