Which of the following statement is wrong?
a) Fish heart has 2 chambers
b) Fish heart has double circulation
c) The heart pumps venous blood towards the gills via the ventral aorta

Correct option is C

Correct Answer: (c) Only b
Explanation:
→ Fishes have single circulation, not double circulation—thus statement (b) is wrong.
→ Statement (a) is correct (atrium + ventricle).
→ Statement (c) is correct—heart pumps venous blood to gills for oxygenation.
Information Booster:
→ After gills, oxygenated blood goes directly to body tissues.