Some members of this phylum keep their bodies clean through the use of pedicellaria
(pe-deh-sell-AIR-ee-uh). Its species have a system of interlocking calcium carbonate plates calledstereom. Many members of this phylum exhibit (*) pentaradial symmetry, and have tube feet calledpodia. Podia are found at the end of this phylum's main method of movement and respiration, the water-vascular system. Name this phylum of sea cucumbers and starfish, which has a Greek name that describe its members' spiny skin.

Definitely is  ECHINODERMATA

Explanation:

Echinoderms are marine invertebrates characterized by radial symmetry, they are animals that have 5 or more arms. This phylum includes, among others species, sea urchins,  sea cucumbers, brittle stars, starfish, crinoids  and sand dollars

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )

osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.