69. Sponges And Porifera Question Preview (ID: 50595)


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Sponges have large mouths and very small brains.
a) True
b) False
c)
d)

Sponges can only grow in one spot.
a) True
b) False
c)
d)

Sponges feed on __________
a) Water
b) Bacteria
c) Fungi
d) People

There are more than 20,000 species of spongers.
a) True
b) False
c)
d)

A sponge filters water through its body and gains nutrients from tiny organisms in the water.
a) True
b) False
c)
d)

Sponges can not change the shape of their body.
a) True
b) False
c)
d)

Sponges have a nervous system.
a) True
b) False
c)
d)

There are ____ classes of sponges.
a) 2
b) 4
c) 3
d) 5

Spongers is a special protein used to make a sponges ______
a) Mouth
b) Skeleton
c) Head
d) Feet

Calcarea sponges use calcium to make their skeletons.
a) True
b) False
c)
d)

Glass sponges use ________ dioxide to make their skeletons.
a) Silicon
b) Nitrogen
c) Carbon
d) Oxygen

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