Question

Based on the given observations made by a student during microscopic investigation, identify the organisms.
Bones are hollow which makes their body lighter.

Answer 1

Answer :

i) Bird bones usually contain air, many bird bones are hollow, with struts or trusses (cross walls) that crisscross for structural strength.

ii) Hollow part of a bird bone isn't wasted space.

iii) The hollow cavities contain extensions of the air sacs from the lungs.

iv) These air sacs help the bird to get the oxygen it needs to fly quickly and easily.
v) Therefore hollow bones of birds makes their body lighter to fly easily.
So correct answer is Bird.