A closer look at AAnmiotes
A closer look at AAnmiotes. Amniotes. 26-1. KEY CONCEPT Reptiles, birds, and mammals are amniotes. Amniote embryos develop in a fluid-filled sac. The amniotic sac contains everything an embryo needs to grow. some develop inside mother’s body some develop inside a tough, semipermeable shell.
420 views • 39 slides