4 Written Questions
3 Multiple Choice Questions
- no body cavity
- They lack tissues, organs, and organ system.
- The sponge body is comprised of a couple different cell types that form the outside and inside layers of the body wall.
3 True/False Questions
What are choanocytes? → They lack tissues, organs, and organ system.
What kind of feeding? → intracellular
• Number of tissue → no body cavity