The American brook lamprey is a freshwater lamprey that lives in streams. Lampreys move streambed stones to make a nest in which to lay their eggs. Which defining feature of the lamprey might enable it to move these stones?

Question

Quizplus · Accepted Answer

The oral disk is a defining feature of lampreys that enables them to attach to surfaces and move objects, such as stones in a streambed.

The American Brook Lamprey Is a Freshwater Lamprey That Lives