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BIO 100 EXAM 3 2025 QUESTIONS AND ANSWERS Vertebrate - ....ANSWER ...-Vertebrates have a backbone made of bony vertebrae surrounding the spinal cord, along with mineralized connective tissue (bone) and other features like paired fins and a dorsal nerve cord. Jawless fishes - ....ANSWER ...-The two jawless fish groups are Myxini (hagfish) and Petromyzontida (lampreys). Hagfish slime - ....ANSWER ...-Hagfish slime expands rapidly and is extremely strong and flexible, inspiring bio-materials like kevlar and shark defense technologies. Lampreys impact on Great Lakes - ....ANSWER ...-Parasitic sea lampreys have caused significant damage by sucking blood from fish, leading to overpopulation issues and fishery declines in the Great Lakes. Class Chondrichthyes - ....ANSWER ...-Chondrichthyes are cartilaginous fishes including sharks, skates, rays, and ratfish. The name means 'cartilage fish'. ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1