WorksheetsPorifera (sponges)
Total questions: 15
Worksheet time: 10mins
Name
Class
Date
1.
Because sponges cannot move around they are considered ______.
a)
sessile
b)
senile
c)
sedementary
d)
spongin
2.
Sponges have many pores or ______ to circulate water.
a)
osculum
b)
holes
c)
ostia
d)
spongin
3.
The protein that makes up a squishy sponge skeleton is called _____.
a)
silica
b)
spongin
c)
spicules
d)
sessile
4.
cells that create spicules, absorb nutrients and oxygen, and can transform into other cell types
a)
amoebocyte
b)
porocyte
c)
pinacocyte
d)
ostiocyte
5.
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
6.
flattened cells on the outer surface of a sponge that create a 'skin' layer.
a)
amoebocyte
b)
ostiocyte
c)
pinacocyte
d)
choanocyte
7.
large opening at the top of a sponge where water exits.
a)
ostia
b)
osculum
c)
orifice
d)
opening
8.
skeleton structures made of silica or calcium carbonate
a)
spicules
b)
spongin
c)
sessile
d)
something
9.
simplest sponge body form with multiple ostia and only one osculum
a)
ascon
b)
sycon
c)
leucon
d)
huh
10.
most complex sponge body form with many chambers and canals and can have multiple osculum.
a)
ascon
b)
sycon
c)
leucon
d)
huh
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.
Who lives in a pineapple under the sea?
a)
Spongebob Squarepants
b)
Patrick Star
c)
Mr. Krab
d)
Squidward
13.
Which of the following is not found in sponges?
a)
Choanocytes
b)
Tissues
c)
Pinacocytes
d)
Mesohyl
14.
The cilia of a choanocyte
a)
regulates the diameter of the osculum
b)
filters food from the water
c)
creates currents in the water
d)
secretes digestive enzymes
15.
What type of symmetry do Porifera have?
a)
asymmetrical
b)
bilateral
c)
radial
d)
exoskeleton
100 %
