Regarding Osteichthyes : 1. They have three pairs of gills 2. Gills are covered by an operculum on each side. Regarding 1 and 2:

Question

( a ) 1 is correct but 2 is incorrect
( b ) 1 is incorrect but 2 is correct
( c ) Both are correct
( d ) Both are incorrect

Answer 1

(B) is the right answer.

Class – Osteichthyes : They have four pairs of gills which are covered by an operculum on each side.