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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?
A
cellular
B
organ-system
C
organ
D
tissue
2) Which one of the following cell types is not found in sponges?
A
amoebocytes
B
collar cells (choanocytes)
C
neurons
D
epidermal cells
3) What is the function of collar cells?
A
pass nutrients to other cells
B
protection
C
create water currents that pass through the sponge
D
reproduction
4) How do collar cells create water currents?
A
beating of their flagella
B
by swimming freely in circles in the central cavity
C
by causing a vortex for the water to flow through
D
by contraction and relaxation of the cells
5) What is the function of amoebocytes?
A
protection
B
pass nutrients to other cells
C
create water currents that pass through the sponge
D
reproduction
6) What is the function of epidermal cells?
A
pass nutrients to other cells
B
reproduction
C
create water currents that pass through the sponge
D
protection
7) Because sponges stay in one place all there lives and feed off of food particles in the water they are called
A
sessile autotrophs
B
sessile filter feeders
C
mobile filter feeders
D
mobile autotrophs
8) Sponge skeletons made of calcium carbonate or silica are called
A
tests
B
spongin
C
spicules
D
valves
9) Sponge skeletons made of collagenous fibers are called
A
spicules
B
valves
C
spongin
D
tests
10) Asexual reproduction in sponges occurs by
A
a. fragmentation
B
b. budding
C
c. a and b are correct
D
d. none are correct
*select an answer for all questions
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