A) insects
B) arachnids
C) molluscans
D) echinoderms
Correct Answer: B
Solution :
Class Arachnida of Arthropodacharacterised by : Respiration by book lungs. Excretion by Malpighian tubules or coxal glands Cephalothorax bears two pairs of chelicerae, pedipapli and four pairs of legs. Example :Buthus, Centrums and Palamnaeus.
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