Which of the following statement is wrong?
a) Fish are cold-blooded
b) Fish has allantoic bladder
c) Fish does not have middle ear

Correct option is C

Correct Answer: (c) Only b
Explanation:
→ Fish do not possess an allantoic bladder; allantois is an embryonic membrane in amniotes (reptiles, birds, mammals).
→ Statement (a) is correct—fishes are ectothermic.
→ Statement (c) is correct—fishes lack a middle ear but use inner ear and lateral line for sound detection.
Information Booster:
→ Presence of Weberian ossicles in cyprinids improves hearing.