Animal Kingdom

1. Which of these is a picture of a choanocyte?

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• 
• 
• 

2. The large opening at the top of the sponge is called the

• Osculum

• Spicule

• Porocyte

• Spongocoel

3. Which of the following is NOT what a sponge skeleton can be made of?

• Spongin

• Cnidocyst

• Silica

• Spicule

4. Choanocytes are also known as _____.

• epithelial cells

• collar cells

• pore cells

• amoeboid cells

5. Sponges feed by filtering _____________ out of the water column as it passes through the spongocoel.

• small fish

• oxygen

• macro algae

• plankton

7. What are stinging organelles with a coiled thread found in the tentacles which are used to capture prey or defend against predators?

• cnidocytes

• nematocytes

• choanocytes

• pinacocytes

This picture of a sea anemone would represent which form of a Cnidarian?

• Medusa

• Larval

• Polyp

• Free-swimming

Ctenophora is commonly called as:

• Flatworms

• Sea Anemone

• Comb Jellies

• Cnidaria

The function of Flame cells are:

• Excretion and Osmoregulation

• Digestion and excretion

• Anchorage and excretion

Cnidarians were the first animals to develop _____________ cells so they could react to their environment.

• epidermis

• nerve

• collar

• gastrodermis