Q. Choose the correct option with regards to Chondrichthyes
A) Presence of swim bladders that help them to maintain bouyancy
B) These are usually ammoniotelic animals
C) Statement (b) is true, but (a) is false
D) Both statements (a) and (b) are false
Explanation
Chondrichthyes lacks swim bladders, that help them to maintain bouyancy hence must swim constantly to avoid sinking. Chondrichthyes are ureotelic animals. Both statements (a) and (b) are false for Chondrichthyes
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.