Which of the following characteristic features always holds true for the corresponding group of animals `{:("(a)","Cartilagious endoskeleton",,"Chondr
Which of the following characteristic features always holds true for the corresponding group of animals
`{:("(a)","Cartilagious endoskeleton",,"Chondrichthyes"),("(b)","Vivparous",,"Mammalia"),("(c)","Possess a mouth with an upper and a lower jaw",,"Chordata"),("(d)","3- chambered heart with one incompletely divided ventricle",,"Reptilia"):}`
A. `{:(,"Viviparous",,"Mammalia"):}`
B. `{:(,"Possess a mouth with an ",,"Chordata"),(,"upper and a lower jaw",,):}`
C. `{:("3-chambered heart with one incompletely divided ventricle ",,"Reptilia "):}`
D. `{:("Cartilaginous",,"- Chondrichthyes "),("endoskeleton",,):}`
1 Answers
Correct Answer - D
Reptiles have 3-chambered heart except crocodiles. Mammals are viviparous except prototherian mammals, chordates have jaws except protochordates and cyclostomes.