WorksheetsPorifera
Total questions: 10
Worksheet time: 5mins
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.
Flagella inside a sponge keep water moving through its body. Why is this necessary?
a)
It prevents the sponge from floating away
b)
It allows the sponge to feed
c)
It allows the sponge to absorb carbon dioxide
d)
It maintains the water pressure inside the sponge
4.
Sponges get their food by
a)
going through photosynthesis
b)
decomposing it
c)
sponges do not eat
d)
filter feeding
5.
What is the name of the phylum sponges belong to?
a)
mammals
b)
chordate
c)
cnidarians
d)
Porifera
6.
___________ are tiny hard particles that give a sponge support and can provide protection when they stick out of a sponge.
a)
spongin
b)
bones
c)
buds
d)
spicules
7.
What is true about sponges?
a)
They have organs
b)
They have bilateral symmetry
c)
They have a true coelom
d)
They are animals
8.
The cells inside the sponge that have flagella (and absorb food) are called...
a)
Collar cells
b)
Flagella
c)
Osculum
d)
Pores
9.
Sponges are primarily sessile organisms. What does this mean?
a)
They live permanently in one palce
b)
They move around their whole life
10.
Which part of the sponge body is the central cavity that leads to the osculum?
a)
Ostia
b)
Mesenchyme
c)
Spongocoel
d)
Osculum
100 %
