Although body wall exhibits bilateral symmetry in nematode, yet stylet knobs exhibit

A. Tri-radiate symmertry

B. Tetra-radiate symmetry

C. Hexa-radiate symmetry

D. Octa-radiate symmetry

Answer: Option A

Solution(By Examveda Team)

Although body wall exhibits bilateral symmetry in nematode, yet stylet knobs exhibit Tri-radiate symmertry.
Tri-radiate means having three rays or radiating branches.
The tri-radiate condition would be explained if the dorsal hydrocoele formed only a single podium and ambulacrum.