Q638
Although body wall exhibits bilateral symmetry in nematode, yet stylet knobs exhibit
A.
Tri-radiate symmertry
AnswerB.
Tetra-radiate symmetry
C.
Hexa-radiate symmetry
D.
Octa-radiate symmetry
Answer: Option A
Solution
Answer: Option A
Solution:
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.