Which of the following is correct statement?
A. All the reptiles have a three chambered heart.
B. All mammals are viviparous.
C. All cyclostomes do not posses jaws and paired fin.
D. All pisces have gills covered by a operculum.
Answer:C
Which of the following is correct statement?
A. All the reptiles have a three chambered heart. B. All mammals are viviparous. C. All cyclostomes do not posses jaws and paired fin. D. All pisces have gills covered by a operculum.