Question

Few vertebrates possess only an axial skeleton. What does this statement mean?

• A. They have skull and vertebral column.
• B. They have girdles and limb bones.
• C. They have vertebral column, girdles and limb bones.
• D. All the above

Answer 1

The correct option is A

They have skull and vertebral column.

The hard parts of the animal body are collectively known as skeletal system or simply skeleton. The vertebrates possess the hard parts inside the body. It is known as endo skeleton. The endo skeletal structures are formed with cartilages and bones which are the living tissues. The endo skeleton has been divided into:

I. Axial skeleton - includes the skull and vertebral column.

II. Appendicular skeleton - includes the girdles and limb bones.