Evolution of Kingdom Animalia

Question 1

colonial

Answer 1

• protist have flagellated cells
  -specialized areas of reproduction
  -gastrula- like proto-animal

Question 2

placozoa

Answer 2

-simple sac
-flattened dorsal ventrally (back to front)
-no symmetry
-no mouth
-creeping movement
-outer layer: epidermis
- inner layer: external digestion