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4 Written Questions

3 Multiple Choice Questions

  1. In simple sponges, water enter the body through pores in the walls called ostia and passes into the spongocoel, a central space lined with choanocytes where food particles are trapped and digested intracellulary. Nutrients are passed to neighboring cells. Water leaves through a hole at the top of the sponge called the osculum. In more complex body plans, there is no spongocoel but several smaller chambers lined with choanocytes
  2. The sponge body is comprised of a couple different cell types that form the outside and inside layers of the body wall.
  3. Sponges are sessile (sedentary), filter feeding animals

3 True/False Questions

  1. How do the sponges have structure and strength?The sponge body is comprised of a couple different cell types that form the outside and inside layers of the body wall.

          

  2. what kind of digestion?Sponges are sessile (sedentary), filter feeding animals

          

  3. what do they lack?They lack tissues, organs, and organ system.

          

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