Animal Kingdom Question 756
Question: Ambulacral grooves are absent in the living forms of the class [Pb. PMT 1999; AIIMS 2002]
Options:
A) Crinoidea
B) Ophiuroidea
C) Asteroidea
D) Echinodermata
Show Answer
Answer:
Correct Answer: B
Solution:
In class ophiuroidea, Ambulacral grooves are absent or covered by ossicles.