Question

Pneumatic skeleton is found in
 A. Amphibians/ frog
 B. Reptiles/ wall lizard
 C. Birds/ pigeon
 D. Mammals/ whale

Answer 1

Hint: In biology, the term pneumatic indicates breathing. The light structure and abundant air pockets are found in the bones of many carnivorous dinosaurs, such as this theropod dinosaur, Aerosteon rio coloradensis

Complete answer:
A) Amphibians (frogs) devoid of the pneumatic bones as they can’t be able to fly. A pneumatic skeleton contains hollow bones that assist in flight.
B) Reptiles (wall lizard devoid of pneumatic bones as they can’t be able to fly.
C) Birds (pigeon) consist of pneumatic bones as they do fly. A pneumatic skeleton has hollow bones that assist them in flight.
D) Mammals (whale) devoid of pneumatic bones.

Additional information:
In birds, respiration has developed a particular path. Birds have specialized bones that are pneumatic and they are filled with air sacs that provide a continuous flow of respiration through their bodies. In short, your lungs are basically connected to your bones. To understand why these pneumatic bones evolved and how they work, let's first take a look at their structure.
Pneumatic bones have been present in birds for millions of years.

So the correct answer is 'Birds/ pigeon'

Note: Pneumatic bones are not only present in birds. To demonstrate this fact, breathe deeply through your nose. The air you breathe passes through a series of pockets and channels in the pneumatic bones of your sinuses. The same pouches and air sacs are present in the bones of birds. In reality, birds don't just have pneumatic bones in their skulls; they have them throughout their skeleton. It is this fact that makes the avian skeleton light and delicate.