Observe the given specimen and complete the labels in the above diagram. Find two more examples of this phylum.

Here is the completed activity:

• Observe the given specimen and complete the labels in the above diagram.

  The specimen shown is a sponge, specifically a type like Sycon (or Scypha), which belongs to Phylum Porifera.

  Fig. (Sycon)

  Labels for the diagram:

  1. (Top right, large opening) Osculum
  2. (Middle right, central cavity) Spongocoel
  3. (Middle left, small pores on the surface) Ostia
  4. (Bottom right, internal skeletal elements) Spicules

• Find two more examples of this phylum.

  Two more examples of Phylum Porifera are:

  1. Euplectella (Venus' flower basket)
  2. Spongilla (Freshwater sponge)