A) pretarsus
B) arolium
C) plantulae
D) tibia
Correct Answer: B
Solution :
Arolium is a pad projecting between the tarsal claws of some insects and arachnids. Cockroaches use their arolia for attachment when additional adhesion force is required (eg, windy conditions, handling large prey, mating). They can bring their arolia in contact with the surface in a very fast reflex (18.0 +/-9.9 m). The secretory fluid found on the surface is produced by the gland and transported to the outside, presumably through small pore channels, to enhance adhesion to the substrate.
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