Which one of the following assists in locomotion?

Trichocysts in Paramecium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Pedicellariae of Asteroidea

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Clitellum in Pheretima

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Posterior sucker in Hirudinaria

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D Posterior sucker in Hirudinaria
The posterior region of the body of a leech (Hirudinaria) has a sucker. The anterior sucker is smallest and is perforated by the mouth, which has a conformation enabling it to exert suction on supports. The posterior sucker is bigger. It is disc-shaped and non-perforated. It is essential for locomotion.
So, the correct answer is option D.

Suggest Corrections