Q.Which of the following is an adaptation to the aerial mode of life in Pigeon

Step 1. In most vertebrates both ovaries are functional, but in the female pigeon only the left ovary and its oviduct remain functional, while the right side is reduced to a rudiment.

Step 2. This reduction to a single functional ovary is explicitly described as an adaptation to the pigeon's aerial mode of life, since it reduces the weight the bird must carry while flying. …

Recall which side's ovary is functional in the female pigeon and why tha …

• Assuming both ovaries remain functional in birds as in most other vertebrates. …