Which one of the following groups of animals is correctly matched with its one characteristics feature without even a single exception?
Reptilia: possess 3 - chambered heart with one incompletely divided ventricle
Chordata: possess a mouth provided with an upper and lower jaw
Chondrichthyes: possess cartilaginous endoskeleton
Mammalia: give birth to young one.
Class chondrocytes (cartilaginous fish) -
Marine and predaceous. Mouth is located ventrally and teeth are modified, placoid scales directed backwardly. Air bladder is absent.
- wherein
Eg. Torpedo, Scoliodon, Pristis, Petromyzon.
All Chondrichthyes posses cartilaginous exoskeleton without any exception
Option 1)
Reptilia: possess 3 - chambered heart with one incompletely divided ventricle
Incorrect
Option 2)
Chordata: possess a mouth provided with an upper and lower jaw
Incorrect
Option 3)
Chondrichthyes: possess cartilaginous endoskeleton
Correct
Option 4)
Mammalia: give birth to young one.
Incorrect