A characteristic feature of vertebrates that is unique to mammals is
A.
the presence of pentadactyl limbs
B.
parental care
C.
the possession of scrotum
D.
pulmonary circulation
Answer: C
To see detailed solution to this question and thousands of other questions offline, download TestDriller UTME. Practice rigorously for UTME, enjoy educational games, summary of JAMB literature books, compete with your peers, win prizes and more.