What are Chondrichthyes?
Q: What are Chondrichthyes?
A: Chondrichthyes are cartilaginous fishes that include sharks and their relatives.
Q: What are the characteristics of Chondrichthyes?
A: Chondrichthyes have jaws and paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage rather than bone.
Q: How are Chondrichthyes classified?
A: Chondrichthyes are classified into two subclasses: Elasmobranchii (sharks, rays and skates) and Holocephali (chimaera, sometimes called ghost sharks).
Q: Do Chondrichthyes have bones in their skeletons?
A: No, Chondrichthyes have skeletons made of cartilage rather than bone.
Q: What are the two subclasses of Chondrichthyes?
A: The two subclasses of Chondrichthyes are Elasmobranchii (sharks, rays, and skates) and Holocephali (chimaera or ghost sharks).
Q: What do Chondrichthyes have instead of bones in their skeletons?
A: Chondrichthyes have skeletons made of cartilage instead of bones.
Q: What are some examples of Chondrichthyes?
A: Some examples of Chondrichthyes include sharks, rays, skates, chimaera, and ghost sharks.
