Choose the correct statement.
A. All reptiles have a three chambered heart.
B. All Pisces have gills covered by a operculum
C. All mammals are viviparous
D. All cyclostomes do not possess jaws and paired fin
Answer:D
Choose the correct statement.
A. All reptiles have a three chambered heart. B. All Pisces have gills covered by a operculum C. All mammals are viviparous D. All cyclostomes do not possess jaws and paired fin