Question

Statement(S). Fishes belonging to chondrichthyes have heterocercal caudal fin
Reason(R). These fishes have an anir bladder that acts as hydrostatic organ
A. Both Asserton and Reason are correct and Reason is the correct explanation of Assetion
B. Both Assetion and Reason are correct, but Reason is not the correct explanation of Assertion
C. Asserion is correct, but Reason is incorrect
D. Assertion is incorrect, but Reason is correct

Answer 1

Correct Answer - C
Chondrichthyes or cartilaginous fishes fo ot have air bladder but it is present in bony fishes. In cartilaginous fishes heaterocercal caudal fin is present. Air bladder helps in floating and maintaining b alance.