Q528
Fishes have a ________ chambered heart.
A.
Single
B.
Three
C.
Four
D.
Two
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Fish have a two-chambered heart with unidirectional circulation. Amphibians have a three-chambered heart, which has some mixing of the blood, and they have double circulation. Most non-avian reptiles have a three-chambered heart, but have little mixing of the blood; they have double circulation.