A) Crab-Centipede-Cockroach
B) King crab-Scorpion-Housefly
C) Spider-Peripatus-Mosquito
D) Bedbug-Sandfly-Silkworm
Correct Answer: D
Solution :
Bed bug, sand fly, silk worm are placed in tracheate group of Arthropoda because they have trachae for respiration. Embryonic development of echinoderms shows a number of similarities with those of chordates.
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