Sponges

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Sponges
Study Guide
Quiz
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Sponges Study Guide
Sponges are members of the Kingdom Animalia.
They represent the Phylum Porifera. Most sponges
are marine. Some are found in fresh water.
Sponges live most of their lives attached to a
substrate. There is no line of symmetry to the
body of sponges. They may be termed
asymmetrical. Pores, or holes, within the sponge
allow water to pass through to the inner chamber.
The cells of sponges are specialized to perform
certain tasks. However, the cells are not
organized into tissues. Choanocytes are
flagellated cells that line the internal chamber
of the sponge. The beating of flagella produces
water currents. This allows for small organisms
and organic particles flowing in the currents to
be engulfed by the choanocytes. For protection
and shape, sponges have spongin and spicules.
Sponges reproduce asexually and sexually.
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Sponge Quiz
1. Sponges belong to phylum Animalia.
True
False
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Sponge Quiz
2. Sponges have many pores.
True
False
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Sponge Quiz
3. Sponges exhibit cephalization.
True
False
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Sponge Quiz
4. Sponges belong to the Kingdom Spongae.
True
False
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Sponge Quiz
5. Sponges obtain oxygen through gills.
True
False
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Sponge Quiz
6. Sponges have a mouth at the top of their body.
True
False
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Sponge Quiz
7. Sponges are made up of many cells that form
tissues.
True
False
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Sponge Quiz
8. Sponges have specialized cells called
choanocytes that help the sponge obtain food and
oxygen.
True
False
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Sponge Quiz
9. Spicules form the endoskeleton of the sponge.
True
False
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Sponge Quiz
10. Sponges are considered to be mobile
organisms.
True
False
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