Biology / Bio 2297 · Atom · ~20 seconds
Reptile Traits: the Amniotic Egg
Video not yet published
to the StudyWalks catalog
to the StudyWalks catalog
State
Reptiles lay an amniotic egg, whose internal membranes and shell let the embryo develop away from standing water, unlike amphibians.
Show
A turtle's leathery-shelled egg retains moisture and exchanges gas through its shell while developing on dry land.
Watch for
Students often assume the shell seals the embryo off entirely — it must stay gas-permeable for oxygen and carbon dioxide exchange.