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NEET2004ZoologyLocomotion and MovementActual

Which of the following assists in the locomotion of the organism stated?

Options

  1. AEpithelium of Pheretima
  2. BTrichocysts of Paramecium
  3. CPedicellaria of Star fish
  4. DPosterior sucker of Hirudinaria

Correct answer

D. Posterior sucker of Hirudinaria

Step-by-step 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. Hirudinaria have a posterior sucker for locomotion. Leech creep by looping and swim by undulations of body.

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