Invertebrate Animals Worksheet
This worksheet covers key concepts about invertebrate animals, their characteristics, classifications, and examples for Grade 8 science students.
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Invertebrate Animals
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Read each question carefully and answer to the best of your ability. Good luck!
1. Which of the following is the defining characteristic of an invertebrate?
Presence of a backbone
Absence of a backbone
Warm-blooded
Lay eggs
2. Which invertebrate group includes spiders, insects, and crustaceans?
Mollusks
Annelids
Arthropods
Echinoderms
3. Sponges are simple invertebrates that obtain food by water.
4. A jellyfish is an example of a , which has stinging cells.
5. Most mollusks have a soft body usually protected by a .
6. All invertebrates are microscopic.
True
False
7. Worms are segmented invertebrates.
True
False
Match each invertebrate group with its description.
8. Cnidarians
a. Spiny-skinned animals
9. Echinoderms
b. Soft-bodied animals, often with shells
10. Mollusks
c. Animals with stinging cells
11. Describe two ways in which invertebrates are important to ecosystems.
12. Give an example of an invertebrate and explain how it moves.