Sponges Phylum Porifera Question Preview (ID: 16367)


BIO 2 Review. TEACHERS: click here for quick copy question ID numbers.

Sponge skeletons made of calcium carbonate or silica are called
a) spongin
b) tests
c) spicules
d) valves

Because sponges stay in one place all there lives and feed off of food particles in the water they are called
a) mobile filter feeders
b) sessile autotrophs
c) mobile autotrophs
d) sessile filter feeders

What is the function of epidermal cells?
a) pass nutrients to other cells
b) create water currents that pass through the sponge
c) protection
d) reproduction

What is the function of amoebocytes?
a) pass nutrients to other cells
b) create water currents that pass through the sponge
c) protection
d) reproduction

How do collar cells create water currents?
a) beating of their flagella
b) by contraction and relaxation of the cells
c) by swimming freely in circles in the central cavity
d) by causing a vortex for the water to flow through

What is the function of collar cells?
a) pass nutrients to other cells
b) create water currents that pass through the sponge
c) protection
d) reproduction

Which one of the following cell types is not found in sponges?
a) collar cells (choanocytes)
b) amoebocytes
c) neurons
d) epidermal cells

What level of organization of tissues do sponges have?
a) cellular
b) tissue
c) organ
d) organ-system

Sponge skeletons made of collagenous fibers are called
a) spongin
b) tests
c) spicules
d) valves

Asexual reproduction in sponges occurs by
a) a. fragmentation
b) b. budding
c) c. a and b are correct
d) d. none are correct

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