Question

Which one of the following groups
of animals is correctly matched with
its one characteristic feature without
even a single exception? *
1)Mammalia : give birth to young ones
2)Reptilia : possess 3-chambered
heart with one incompletely divided
ventricle
3)Chordata : possess a mouth provided with an upper and a lower
jaw
4)Chondrichthyes : possess
cartilaginous endoskeleton​

Answer 1

Answer:

Hope this helps you.

Explanation:

Reptilia possess 3-chambered heart with an incompletely divided ventricle and two atria. However, the crocodile is an exception as it has the 4-chambered heart. Chordata possesses a mouth provided with an upper and a lower jaw except for jawless fishes. All Chondrichthyes possess cartilaginous endoskeleton without exception. Mammalia gives birth to young ones. However, Monotremes are mammals that lay eggs instead of giving birth to live young.

Thus, the correct answer is option C.

Answer 2

Explanation:

Chondrichthyes : possess

cartilaginous endoskeleton