Types of skeletons
There are three types of skeleton
- Hydrostatic skeleton
Here support is provided by a fluid under pressure and it is found in round worms, earthworm.
- Exoskeleton
It is made of a hard cuticle protecting inner delicate tissues and also provides attachment for muscles
- Endoskeleton
It occurs in vertebrates, made of bone and cartilages.
It is internal and the muscles are attached to it
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