2023
Biology
POST UTME
Which of the following vertebrates has the simplest heart structure?
A.
Fish
B.
Mammals
C.
Amphibian
D.
Reptiles
Correct Answer: Fish
Explanation
Fish → One auricle, One ventricle
Amphibians → Two auricles, One ventricle Reptile → Two auricles, a partially divided ventricle
Aves & Mammals → Two auricles, two ventricles
Fish → One auricle, One ventricle
Amphibians → Two auricles, One ventricle Reptile → Two auricles, a partially divided ventricle
Aves & Mammals → Two auricles, two ventricles
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