Question

In prototherians what are true ?
(a) Pectoral girdle associated with T-shaped interclavicle.
(b) Mammary glands are modified sebaceous glands.
(c) Pelvic girdle possesses epipubic bones.
(d) Vertebrae are with epiphyses.

• A. a and c
• B. a and b
• C. c and b
• D. b and c

Answer 1

The correct option is A a and c

Interclavicle is present in all tetrapods.

Mammary glands are considered modified sweat glands.

Epipubic bones are present in all marsupials hence protherians too have epipubic bones.

Vertebrae are without epiphyses just like reptiles.

So the correct answer is 'a and c'.