The following questions refer to the description below. Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long,snakelike organism.The attached organism has no external segmentation,no scales,a round mouth surrounded by a sucker,and two small eyes.Terry thinks it might be a marine leech,a hagfish,or a lamprey. -Terry takes the body of the snakelike organism and slices it open along its dorsal side.If it is a hagfish,what should Terry see?
A)a well-developed series of bony vertebrae surrounding the spinal cord B)a well-developed series of cartilaginous vertebrae surrounding the spinal cord C)a tube of cartilage (surrounding the notochord)with dorsal projections on both sides of the spinal cord D)a notochord, located underneath the spinal cord