Jellyfish: Masters of the Ocean
Explore the fascinating world of jellyfish with this Grade 7 science worksheet covering their anatomy, life cycle, and unique characteristics.
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Jellyfish: Masters of the Ocean
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
Jellyfish are incredible marine animals that have existed for millions of years, even before dinosaurs! They are not actually fish, but are invertebrates belonging to the phylum Cnidaria. Their bodies are mostly made of water, and they lack brains, bones, and hearts. Despite their simple structure, they are successful predators in the ocean.
1. To which phylum do jellyfish belong?
Chordata
Arthropoda
Cnidaria
Mollusca
2. Jellyfish are classified as because they lack a backbone.
3. The primary component of a jellyfish's body is .
4. Jellyfish have a brain and a heart.
True
False
5. Observe the image below. Label the bell and tentacles of the jellyfish.
A:
B:
6. Describe how jellyfish move through the water.