Coral reef formation and common marine invertebrates such as octopuses, jellyfish, and sea stars, one concept or species per card.
35 cards · basic cards · AI-written, checked twice. Edit anything.
- What tiny animals build the calcium carbonate skeletons that form coral reefs?
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Coral polyps- What symbiotic algae living in coral tissue provides most of its energy and color?
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Zooxanthellae- What eight-armed marine invertebrate is known for its intelligence and ability to change color and texture?
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The octopus- What marine invertebrate has a soft body, no bones, and is known for producing ink as a defense?
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The octopus (and also squid and cuttlefish)- What marine invertebrate has ten arms, including two longer feeding tentacles, distinguishing it from the octopus?
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The squid- What marine invertebrate is known for its remarkable ability to rapidly change skin color and pattern for camouflage and communication?
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The cuttlefish- What spiny, star-shaped marine invertebrate can regenerate lost arms and typically has five arms?
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The sea star (starfish)- What marine invertebrate has a soft body protected by a hinged, two-part shell, such as a clam or oyster?
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A bivalve- What marine invertebrate has a single spiral shell and a muscular foot used for movement, such as a conch or sea snail?
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A gastropod (sea snail)- What venomous marine invertebrate, related to coral, has a soft, umbrella-shaped body and trailing tentacles?
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A jellyfish- What marine invertebrate lacks the umbrella-shaped body of a true jellyfish but shares a similar sting, and is technically a colony of organisms?
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The Portuguese man o' war- What spiny marine invertebrate, sometimes eaten as a delicacy, has a hard, round shell covered in movable spines?
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The sea urchin- What marine invertebrate, related to sea stars, has a soft, elongated body and expels its internal organs as a defense mechanism?
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The sea cucumber- What marine invertebrate group, including sea anemones, jellyfish, and coral, is characterized by stinging cells called cnidocytes?
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Cnidarians- What marine invertebrate looks like a colorful flower but is actually a stinging predator that traps small fish and shrimp?
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The sea anemone
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