Question

select all that apply
select all the characteristics of cartilaginous fishes.
lateral line organ
skeleton made of cartilage
jaws
gills
lack a dorsal nerve cord as adults
skeleton made of bone

Explanation:

• Lateral line organ: Cartilaginous fishes have a lateral line system that detects vibrations and water movements.
• Skeleton made of cartilage: As the name suggests, cartilaginous fishes (e.g., sharks, rays) have a skeleton composed of cartilage, not bone.
• Jaws: They possess jaws, which is a characteristic of vertebrates in this group.
• Gills: They use gills for respiration, extracting oxygen from water.
• Lack a dorsal nerve cord as adults: This is incorrect. Cartilaginous fishes are vertebrates and have a dorsal nerve cord (spinal cord) as adults.
• Skeleton made of bone: This is incorrect. Their skeleton is cartilage, not bone (that's a characteristic of bony fishes).

Answer:

lateral line organ, skeleton made of cartilage, jaws, gills.