Question

Which of the following characters is not related to Aves?

• A. Homeothermy and presence of oil glands at the base of the tail.
• B. Female genital organs of both sides are functional.
• C. Female genital organ of one side is functional.
• D. Exoskeleton of feathers.

Answer 1

Answer: (B)

Female genital organs of both sides are functional.

Birds are homeotherms as they can control their own body temperature.

The oil gland is a bilobate sebaceous gland possessed by the majority of birds.

Feathers are an exoskeletal structure which is characteristic features of birds.

Unlike most vertebrates, female birds typically have only one functional ovary and oviduct.

Hence, option B is the correct answer.