Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

Options

(a) Reptilia : possess 3 – chambered heart with one incompletely divided ventricle
(b) Chordata : possess a mouth provided with an upper and lower jaw
(c) Chondrichthyes : possess cartilagious endoskeleton
(d) Mammalia : give birth to young one

Correct Answer:

Chondrichthyes : possess cartilagious endoskeleton

Explanation:

Chondrichthyes are the cartilaginous fish with a flexible skeleton made of cartilage rather than bone.