Q. Match the following columns and select the correct option. [table] Column-I | Column-II ; (a) 6 - 15 pairs of gill slits | (i) $Trygon$ ; (b) Heterocercal caudal fin | (ii) Cyclostomes ; (c) Air Bladder | (iii) Chondrichthyes ; (d) Poison sting | (iv) Osteichthyes [/table]
A) (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
B) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
C) (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
D) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
Explanation
[Solution] Cyclostomes have 6-15 pairs of gill slits; Chondrichthyes have a heterocercal caudal fin; Osteichthyes have an air bladder; $Trygon$ has a poison sting. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.