Which of the following characteristic features always hold true for the corresponding group of animals?
(a) Viviparous | (1) Mammalia |
(b) Possess a mouth with an upper and a lower jaw | (2) Chordata |
(c) 3- chambered heart with one incompletely divided ventricle | (3) Reptilia |
(d) Cartilaginous - Endoskeleton | (4) Chondrichthyes |
1. a
2. b
3. c
4. d