Question

Pygostyle is

• A. Largest bone in frog
• B. Bone present in bird's tail for supporting oil glands
• C. Hind part of snakes
• D. Tip of vertebral column of fishes

Answer 1

The correct option is B Bone present in bird's tail for supporting oil glands

Pygostyle is the number of the final few caudal vertebrae fused into a single ossification, supporting the tail and feathers and musculature. It is the main component of uropygium, which is the fleshy protuberance at the posterior end of the bird and is swollen as it contains the uropygial gland that produces preen oil.
Thus, the correct answer is (B), Bone present in bird's tail for supporting oil gland.