Chapter Questions
Briefly describe each of the following adaptations, and explain the adaptive significance of each: vertebral column, jaws, limbs, amniotic egg, feathers, placenta.
List the vertebrate groups that have each of the following.a. a skeleton of cartilageb. a two-chambered heartc. amniotic eggd. endothermye. a four-chambered heartf. a placentag. lungs supplemented by air sacs
Which chordate features can be found in the humanembryo?
Discuss the important features of cartilaginous fishes, rayfinned fishes, coelacanths, and lungfishes.
List the adaptations that distinguish reptiles from amphibians and help reptiles adapt to life in dry terrestrial environments.
List the adaptations of birds that contribute to their ability to fly.
How do mammals differ from birds, and what adaptations do they share?