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Most cnidaria possess a skeletal system known as a exoskeleton, endoskeleton, tibia system, hydroskeleton?

User Dimuth
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hydroskeleton

Hydroskeleton are type of skeletal structures for some organisms which consisted of a fuild-filled cavity for support and framework.

Exoskeleton1. Hard part that lies outside of the body2. Develops from ectoderm3. Composed mainly of hard non-living material called chitin.Endoskeleton1. Hard part that lies inside the body2. Develops from endoderm3. Composed of living material i.e. bone tissue
User Khituras
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