Question

Differentiate between exoskeleton and endoskeleton.

Answer 1

Hint: The body of a living organism consists of two parts namely, Endoskeleton and Exoskeleton. A complex network of several organs constitutes the skeletal system.

Complete answer:
Endoskeleton refers to the hard structure which is present as an inside support system. The structure is developed from an endodermal layer and is living in nature. Bone, cartilage, etc. are some of the examples of endoskeleton. On the other hand, exoskeleton is the hard structure found on the outer side of the body. It provides protection to muscles and various other soft tissues. It is formed from the ectodermal layer and moreover, it is non-living in nature. Horns, scales, feathers, hair, etc. are some examples of exoskeleton.

Exoskeleton	Endoskeleton
It is an external skeletal system.	It is an internal skeletal system.
It is a non-living structure.	It is a living structure.
It is found in Arthropods.	It is found in Vertebrates.
It is formed of scales, calcified shells, and cuticles.	It is formed of calcium and phosphorus.
It is Ectodermal in origin.	It is Endodermal in origin.
It doesn’t grow along with the body.	It grows along with the body.
It is found on the outer side of the body.	It is found on the inner side of the body.
It is less flexible.	It is more flexible.

Note: The skeletal system serves as a support system for the body. It provides shape to the body and helps in its movement. It forms blood cells and helps in storage of minerals. Moreover, it also protects organs from injury. The skeletal system is also referred to as the musculoskeletal system.