Question

AP biology essey need help 10 points need by 3:00 today?

3) A triploblastic animal is one in which three germ layers form during embryonic development. Triploblastic animals include acoelomate, pseudocoelomate, and coelomate (eucoelomate) organisms.

a. Identify the three germ layers of a triploblastic embryo and discuss the fates of these germ layers in embryonic development.

b. Describe acoelomate, pseudocoelomate, and coelomate body plans. Identify an animal that is representative of each of these types of body plan.

c. Compare and contrast the digestive systems of an acoelomate and a coelomate organism.

Answers

a)read http://en.wikipedia.org/wiki/Gastrula

b)read http://en.wikipedia.org/wiki/Acoelomate pay attention to the grouping section.

c)Think about how A&B interact.

#1

i wish i knew too

#2

Well, the layers are ectoderm, mesoderm and endoderm. Ectoderm becomes the nervous system, mesoderm becomes bone, muscle, blood ect. and endoderm becomes the epithelial linings. That's what I can help you with.

#3