Question

The primitive characters of duck billed platypus suggests, that

• A. It is a degenerated mammal.
• B. It shows the stage between aves and mammls.
• C. It shows the stage between reptiles and birds.
• D. It shows the stage between reptiles and mammals.

Answer 1

The correct option is D It shows the stage between reptiles and mammals.

Duck billed platypus is a connecting link between reptiles and mammals because they have mammalian characters, like mammary glands, hair, diaphragm, single aortic arch and lay eggs like reptiles. Hence, option D is correct.