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Phylum Porifera

Total questions: 22

Worksheet time: 13mins

Name
Class
Date
1.

Name of D (opening at top)

a)

Osculum

b)

Ostia

c)

Choanocytes

d)

Incurrent Pore

2.

The sponge has no organs, tissues, and no nervous system.

a)

True

b)

False

3.
Sponges get their food by 
a)
going through photosynthesis
b)
decomposing it
c)
sponges do not eat
d)
filter feeding
4.
Most sponges are hermaphrodites.  What does this mean?
a)
sponges can produce their own food
b)
sponges can produce both eggs and sperm
c)
sponges cannot reproduce
d)
sponges can swim around
5.
Sponges have many pores or ______ to circulate water. 
a)
osculum
b)
holes
c)
ostia
d)
spongin
6.
cells have sticky, funnel-shaped collar to collect food particles and a flagellum that creates a water current
a)
amoebocyte
b)
ostiocyte
c)
pinacocyte
d)
choanocyte
7.

How do sponges obtain food?

a)

filter it from the water

b)

grasp it with tentacles

c)

pry it apart with tube feet

d)

put it in their mouth with jointed legs

8.

Which of the following type of cell digests and distributes food for the sponge?

a)

Choanocytes

b)

Amoebocytes

c)

Endodermal cells

d)

Epidermal cells

9.

_________________ are specialized buds made to survive harsh weather.

a)

Spicules

b)

Plankton

c)

Flagella

d)

Gemmules

10.

Which of the following terms defines how sponges can regrow lost body parts?

a)

Budding

b)

Symmetry

c)

Choanocytes

d)

Regeneration

11.
Asexual sponge reproduction where a piece of the adult sponge breaks off and settles in a new area growing to adulthood.
a)
broadcast spawning
b)
branching
c)
budding
d)
forcast spawning
12.
The hard "skeleton" structures in a sponge are called...
a)
Spongin
b)
Spicules
c)
Amebocytes
d)
Pinococytes
13.
What habitat can sponges be found or inhabit?
a)
Saltwater and Freshwater
b)
Saltwater only
c)
Rainforest
d)
Freshwater only
14.
What  is space between the outer cell layer and inner cell layer that has amebocytes, spongin, and spicules it called?
a)
epidermis
b)
mesoglea
c)
mesohyl
d)
gatrodermis
15.
What is the outer most layer of Porifera?
a)
epidermis
b)
gastrodermis
c)
endodermis
d)
mesoglea
16.

90% of the typical Sponges are these.

a)

Class Demospongiae

b)

Class Hexactinellida

c)

Class Calcarea

17.

Sponges are fixed to a substrate and cannot move. Another word for this is ___________.

a)

sessile.

b)

mobile.

c)

tertiary.

d)

sedentary.

18.

What does the term Porifera mean?

a)

pore-bearing

b)

sponge-bearing

c)

cell-bearing

d)

bud-bearing

19.

What moves water through the sponge?

a)

Collar cell

b)

Flagella

c)

Porocyte

d)

Amebocyte

20.
Choanocytes are also known as _____.
a)
epithelial cells
b)
amoeboid cells
c)
collar cells
d)
pore cells
21.

The protein found in a sponge is called...

a)

Spongin

b)

Ostia

c)

Amebocytes

d)

Pinococytes

22.
Who lives in a pineapple under the sea?
a)
Spongebob Squarepants
b)
Patrick Star
c)
Mr. Krab
d)
Squidward

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