10 Questions
Chondrichthyes are characterized by the presence of:
Placoid scales
What is the function of the spiracle in Chondrichthyes?
Respiration
What is the characteristic feature of the heart in Chondrichthyes?
Conus arteriosus
What feature distinguishes the males of Chondrichthyes from the females externally?
Claspers
What type of fins are present in Chondrichthyes for the first time in vertebrate history?
Paired fins (pectoral & pelvic fins)
What is the specific name of the chamber in the heart of Chondrichthyes?
Conus arteriosus
What is the function of the spiracle in Chondrichthyes?
Non-functional
What type of gill opening is present in Chondrichthyes?
Five gill slits
What type of scales are present in Chondrichthyes?
Placoid scales
What is the characteristic feature of the digestive system in Chondrichthyes?
Spiral valve
Test your knowledge about the anatomy of Chondrichthyes, a class of marine predators with a cartilaginous endoskeleton. Learn about their unique features such as ventrally located crescent-shaped mouth, placoid scales, and the presence of paired fins.
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