Question

Which of the following ovary and oviduct are functional in birds?

• A. Left
• B. Right
• C. Right ovary, left oviduct
• D. Right ovary, both oviducts

Answer 1

The correct option is A Left

A) Only the left ovary and oviduct of birds are functional. Although the female embryo has two ovaries, only the left one develops. The right one regresses during development and is nonfunctional in the adult

B) The right ovary and oviduct are nonfunctional.

C) The right ovary is nonfunctional while the left ovary is functional.
D) Birds have only one functional ovary and oviduct and that is the left one.

So the correct answer is 'Left'.