WAEC Biology 2012 Objective — Question 12
Question 12 of 60 from the West African Examinations Council (WAEC) Biology 2012 Objective paper, with the correct answer and a full explanation.
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A student dissecting an animal specimen discovered that it has two auricles and one ventricle. The animal is likely to be a/an
- A. fish
- B. reptile
- C. amphibianCorrect
- D. bird
Explanation
Amphibians have a three-chambered heart — two auricles and one ventricle. (Fishes have a two-chambered heart — one auricle, one ventricle; reptiles have two auricles and a partially divided ventricle; birds and mammals have four-chambered hearts.)
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