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Sponges Phylum Porifera

Test Description: BIO 2 review

Instructions: Answer all questions to get your test result.

1) What level of organization of tissues do sponges have?

Atissue Borgan Corgan-system Dcellular

2) Which one of the following cell types is not found in sponges?

Acollar cells (choanocytes) Bepidermal cells Camoebocytes Dneurons

3) What is the function of collar cells?

Aprotection Bcreate water currents that pass through the sponge Cpass nutrients to other cells Dreproduction

4) How do collar cells create water currents?

Aby swimming freely in circles in the central cavity Bbeating of their flagella Cby causing a vortex for the water to flow through Dby contraction and relaxation of the cells

5) What is the function of amoebocytes?

Acreate water currents that pass through the sponge Breproduction Cprotection Dpass nutrients to other cells

6) What is the function of epidermal cells?

Apass nutrients to other cells Bcreate water currents that pass through the sponge Creproduction Dprotection

7) Because sponges stay in one place all there lives and feed off of food particles in the water they are called

Amobile filter feeders Bsessile autotrophs Csessile filter feeders Dmobile autotrophs

8) Sponge skeletons made of calcium carbonate or silica are called

Aspongin Btests Cspicules Dvalves

9) Sponge skeletons made of collagenous fibers are called

Aspicules Bvalves Cspongin Dtests

10) Asexual reproduction in sponges occurs by

Ad. none are correct Bb. budding Cc. a and b are correct Da. fragmentation

*select an answer for all questions

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