calcareous plates
They make up the skeleton and protect internal structures.
where bony plates growth zone is found in..
Starfish are invertebrates, but they do have any endoskeleton comprised of calcareous ossicles. These ossicles are connected together by a mesh of collagen fibers.
endoskeleton;)
The endoskeleton
A starfish is an invertebrate, which means it has no spine, however it does have spines, which are white and calcareous that extend from the endoskeleton beneath. The spines are movable, used for protection and are sensitive to touch.
Yes, a deer does have an endoskeleton. It's endoskeleton is made up of bone and cartilage system.
The term "endoskeleton" includes the others (skull, spine, and pelvis) because it refers to the internal framework of bones that provides support and protection to the body. The skull, spine, and pelvis are all examples of bones that make up the endoskeleton.
The bony plates that make up a starfish's skeleton is the ossicles. They are found in not only starfish but sea cucumbers and sea urchins also.
A true endoskeleton is derived from mesodermal tissue.
The first organisms to develop a hardened endoskeleton were likely ancient invertebrates called echinoderms, such as sea urchins and starfish. Their endoskeleton is made of plates composed primarily of calcium carbonate. This adaptation provided structural support and protection as these organisms evolved to live in various marine environments.
Starfish are composed primarily of water and have a network of vessels that circulate seawater throughout their bodies. They also have a hard calcium carbonate exoskeleton that provides structure and protection. Additionally, they have a unique water vascular system that helps them move and feed.