WebMost chondrichthyans breathe through the buccopharyngeal cavity, gills, spiracles, or nostrils. All species of sharks, rays, and chimeras produce large yolk-rich eggs that are … Webc. one or more gill slits. d. one or more of the bones of the cranium. e. one or more of the vertebrae. 3. Chondrichthyes? a. an amniotic egg b. unpaired fins c. an acute sense of vision that includes the ability to see in color d. a cartilaginous endoskeleton e. lack of jaws 4. exclusively internal? a. Chondrichthyes, Osteichthyes, and Mammalia

Chapter 24: Fishes Flashcards Quizlet

WebThey contain 5-7 pairs of gills. Gaseous exchange occurs through the water current that passes over the gills. They lack air bladders so they swim actively to avoid sinking. They … Webhollow dorsal nerve chord. used to form the brain and spinal cord. paired gill slits or opening. connect the pharynx to the outside of the body. post-anal tail. an extension of … tally concert

Chondrichthyan - Respiration, reproduction & growth

WebActinopterygii their gill slits covered by operculum have while Chondrichthyes have their gill slits exposed c. Actinopterygii scaly skin have while Chondrichthyes have slimy skin d. Actinopterygii have heterocercal tail fins while Chondrichthyes have homocercal tail fins Previous question Next question This problem has been solved! WebE) chondrichthyans A A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics? A) legs B) no jaws Webmonophyletic Class Chondrichthyes cartilage fish; sharks, skates and rays Skeleton of chondrichthyes cartilaginous with well-formed vertebrae present; is "calcified" with … tally commercial 2022