(Solved): 1 pts Question 54 An organism is described as breathing by a method called buccal pumping. This mea ...

1 pts Question 54 An organism is described as breathing by a method called buccal pumping. This means Othey are using changes in the size of their mouth to pump air into the lungs O they expand and contract their thoracic cavity to create negative and positive pressure changes to move air in and out of the body Question 55 1 pts An animal that is able to provide nourishment to its embryo via a placenta or other internal tissue is called O ovoviparous Onon-existent oviparous viviparous The cartilaginous fishes (sharks, skates, and rays) are associated with what significant innovation? O well-developed teeth O a jaw O all of the listed choices O paired fins Question 57 1 pts Which is considered a critical innovation in the transition between amphibian and reptilian adaptation to land? a shelled, amniotic egg Otadpoles teeth adapted to a carnivorous lifestyle Otetrapody