Biology · PYQ NEET UG 2016(1)

Which of the following characteristic features always holds TRUE for the corresponding group of animals?

1. A
   Possess a mouth with an upper and a lower jaw (Chordata)
2. B
   Cartilaginous Endoskeleton (Chondrichthyes)
3. C
   3-chambered heart with one incompletely divided ventricle (Reptilia)
4. D
   Viviparous (Mammalia)