Body Cavity (coelom)

Question 1

Acoelom

Answer 1

-triploblast that do not develop a coelom
- mesoderm region is completely filled with tissue
- no open area
- tissues form a solid mass

Question 2

Pseudocoelom

Answer 2

• “false” coelom
• lined partly with mesoderm and partly endoderm
  -open area in body
• unlined cavity, no membrane to separate areas
• peritoneum (membrane)

Question 3

coelum

Answer 3

• open area in body
• body cavity is unlined
• peritoneum, membrane separates regions of the body cavity