Answer the following question given this paragraph: 

Endoskeleton An endoskeleton is a skeleton that consists of hard, mineralized structures located within the soft tissue of organisms. An example of a primitive endoskeletal structure is the spicules of sponges. The bones of vertebrates are composed of tissues, whereas sponges have no true tissues (Figure 38.4). Endoskeletons provide support for the body, protect internal organs, and allow for movement through contraction of muscles attached to the skeleton.


Q: A skeleton that consists of hard, mineralized structures located within the soft tissue of organisms is called what?

 Choices:

- exoskeleton

- calcium deposits

- hydrostatic skeleton

- endoskeleton

A:
endoskeleton
