Invertebrate Worksheet

 What Is an Invertebrate?
Examine the chart giving information about invertebrates. The variety of invertebrates is great. They are divided into twelve phyla. Three phyla are shown.
Porifera by porifera
Sponges. Simplest of all animals; adults attatched to rocks and cannot move.
Cnidaria 2 by J. Ruiz
2. Cnidaria
Hydras, jellies, sea anemones, corals. Live in water; some attach to rocks; have tentacles and stinging cells around mouth.
Arthropod by wg22879
3. Arthropoda (arthropods)
Insects, spiders, scorpions, lobsters, shrimp. Live in water and on land; have an exoskeleton and jointed legs. There are about 1,000,000 species.
Answer these questions about the chart above.
1.      Where do Cnidaria live? ________________________________________________________________________

2.      Which animals are the simplest of all animals? ________________________________________________________________________

3.      What are some of characteristics of Cnidaria? ________________________________________________________________________

4.      What are some of the characteristics of the members of the phylum Arthropoda? ________________________________________________________________________________________________________________________________________________

5.      About how many species are there of Arthropoda? ________________________________________________________________________