Invertebrate Animals Worksheet
Explore the fascinating world of invertebrate animals with this worksheet for 6th graders. Learn about their characteristics, classifications, and unique adaptations.
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Invertebrate Animals
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following is a characteristic of invertebrate animals?
They have a backbone.
They do not have a backbone.
They are all very small.
They all live in the ocean.
2. Which group of invertebrates includes animals with stinging cells?
Arthropods
Mollusks
Cnidarians
Echinoderms
3. Sponges are simple invertebrates that are classified as .
4. Insects, spiders, and crustaceans are all examples of .
5. A worm is an invertebrate with a long, segmented body and no .
6. All invertebrates are microscopic.
True
False
7. Snails and clams are examples of mollusks.
True
False
8. Describe two ways in which invertebrates are important to ecosystems.
9. Give an example of an invertebrate and explain one unique adaptation it has.
Match each invertebrate group with its description.
10. Arthropods
a. Soft-bodied animals, often with shells
11. Mollusks
b. Animals with jointed legs and an exoskeleton
12. Echinoderms
c. Marine animals with radial symmetry and spiny skin
Use the words below to complete the sentences.
13. Insects have a hard outer covering called an .
14. Starfish exhibit symmetry, meaning their body parts are arranged around a central point.