4 Written Questions
3 Multiple Choice Questions
- no true tissue
- Specialized flagellated cells, choanocytes, move water through and filter food particles from the water
- 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 do they lack? → Sponges are sessile (sedentary), filter feeding animals
• Type of body cavity → no true tissue
where does gas exchange occur? → Gas exchange and excretion occur via diffusion across individual cell membranes.