Answer:
Chordates are those organisms which consists of bone like structure called notochord.
Explanation:
Notochord is a soft skeletal bone which is a type of cartilage that is present in the embryo and and some other chordate organisms. This bone provides a place for the attachment of skeletal muscles. Some chordates also present tail at the back side of the body. Dorsal nerve cord controls the body which consist of brain and nervous system.
