Class – Amphibia : 1. Alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca 2. Cloaca opens to the exterior. 3. These are cold-blooded animals. Regarding 1,2 and 3:

Question

( a ) 2 is incorrect but 1 and 3 are correct
( b ) 3 is incorrect; 1 and 2 are correct
( c ) 1 is incorrect but 2 and 3 are correct
( d ) All are correct