A) Epithelium of Pheretima
B) Trichocysts of Paraniedum
C) Pedicellaria of Star fish
D) Posterior sucker of Hirudinaria
Correct Answer: D
Solution :
Hirudinaria belongs to class Hirudinea of phylum Annelida. It has definite number of body segments (26 + 7 = 33) It feeds on blood (sanguivorous) and has anticoagulant hirudin in its saliva. Hirudmaria have a posterior sucker for locomotion. Leech creep by looping and swim by undulations of body.
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