Question

Pneumatic bones are found in_________
A. Insects
B. Birds
C. Snakes
D. Whales

Answer 1

Hint: These types of bones are filled with air sacs that make the bodyweight of the organism very light. They make aerial movement easier for the organisms.

Complete answer:
Pneumatic bones found in birds. Pneumatic bones are hollow. and since of pneumatic bones, birds can fly within the air.
The bones of mammals are heavier than the bones of birds. a number of the bones are hollow and truly act as a part of the avian systema respiratorium. These bones, called pneumatic bones, include the skull, humerus, clavicle, keel, pelvis, and lumbar and sacral vertebrae.
Skeletal pneumaticity within the presence of air spaces within bones. It's generally produced during development by the excavation of bone by pneumatic diverticula (air sacs) from an air-filled space, like the lungs or cavity. Pneumatization is very variable between individuals, and bones not normally pneumatized can become pneumatized in pathological development.
An important requirement of flight may be low weight. As weight increases, the muscle output required for flying increases. The most important living bird is the ostrich, and while it's much smaller than the most important mammals, it's flightless. For birds that do fly, a discount in weight makes flight easier. Several modifications are found in birds to scale back weight, including the pneumatization of bones.

Note: - Pneumatic bones are bones that are hollow, instead of crammed with a tissue . They contain air spaces that are sometimes connected to air sacs, and that they have struts of bone to supply structural reinforcement.
- Pneumatic bones aren't found altogether in birds, and that they are more extensive in large birds than in small birds.
- Not all bones of the skeleton are pneumatic, although the skulls of just about all birds are.