10.5: Cartilaginous Fish Difficulty Level: At Grade Created by: CK-12 % Progress MEMORY METER This indicates how strong in your memory this concept is Practice Progress % % Practice Now MEMORY METER This indicates how strong in your memory this concept is Share Add to Library Turn In Read Practice Resources Details Loading... Notes/Highlights Having trouble? Report an issue. Color Highlighted Text Notes Show More Vocabulary Language: English ▼ English TermDefinition barbels Whisker-like organs that sense the environment to help the sharks find food. cartilage Tough yet flexible material that lends support. cartilaginous fish Class of fish, including sharks and rays, with a skeleton of cartilage. Leydig’s organ Organ that produces red blood cells; found only in sharks and rays. ovoviparous Describes an organism that retains fertilized eggs inside the body, so that the young hatch internally and are born alive. placoid scales Tough scales that originate from modified teeth. Image Attributions Show Hide Details Description Covers characteristics of the cartilaginous fish. Learning Objectives None Difficulty Level: At Grade Authors: Jessica Harwood Douglas Wilkin, Ph.D. Contributors: Doris Kraus, Ph.D. Niamh Gray-Wilson Jean Brainard, Ph.D. Sarah Johnson Jane Willan Corliss Karasov Editors: Douglas Wilkin, Ph.D. Tags: cartilaginous fish Rays SCI.BIO.834.6.L.1 (2 more) SCI.LSC.834.6.L.1 sharks Subjects: science Life Science Concept Nodes: SCI.LSC.834.6 (Cartilaginous Fish) Grades: 7 , 8 Date Created: Nov 29, 2012 Last Modified: Aug 30, 2016 Vocabulary None Save or share your relevant files like activites, homework and worksheet.To add resources, you must be the owner of the Modality. Click Customize to make your own copy.