Porifera Quiz

Because sponges cannot move around they are considered ______. 

• sessile
• senile
• sedementary
• spongin

Sponges have many pores or ______ to circulate water. 

• osculum
• holes
• ostia
• spongin

The protein that makes up a squishy sponge skeleton is called _____. 

• silica
• spongin
• spicules
• sessile

Sponges feed by ______ particles out of the water column as it passes through their pores. 

• filtering
• suspending
• consuming
• eating

cells that create spicules, absorb nutrients and oxygen, and can transform into other cell types

• amoebocyte
• porocyte
• pinacocyte
• ostiocyte

cells that make up pores all over the sponges body and allow water to enter the sponge.

• amoebocyte
• porocyte
• pinacocyte
• ostiocyte

cells have sticky, funnel-shaped collar to collect food particles and a flagellum that creates a water current

• amoebocyte
• ostiocyte
• pinacocyte
• choanocyte

flattened cells on the outer surface of a sponge that create a 'skin' layer.

• amoebocyte
• ostiocyte
• pinacocyte
• choanocyte

large opening at the top of a sponge where water exits.

• ostia
• osculum
• orifice
• opening

skeleton structures made of silica or calcium carbonate 

• spicules
• spongin
• sessile
• something