Current molecular data suggests metamerism arose independently in annelids and arthropods.
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Q13: Chelicerate arthropods possess
A)pedipalps.
B)antennae.
C)mandibles.
D)three pairs of walking legs.
Q14: Some mites cause disease,but none are of
Q15: Arthropods are similar to annelids in that
Q16: In complete metamorphosis,the sequence of instars is
Q17: Current molecular evidence indicates that Hexapoda and
Q19: Most species of insects have wings.
Q20: Crustaceans are primarily freshwater animals,but there are
Q21: Scorpions
A)feed during the day.
B)are most common in
Q22: Crustaceans
A)breathe by means of tracheae.
B)excrete by means
Q23: Ecdysis (molting)in crustaceans
A)involves production of a new
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