SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Cnidarians lack muscle cells that most other animals use to move about. Cnidarians have body opening(s). What happens when an animal touches a nematocyst? the dart uncoils and buries itself into the skin of the animal; the unlucky animal is paralyzed or killed then eaten.
Detailed explanation-2: -They contract their hollow, saucer-shaped bodies (called bells) to force water out, which propels them forward.
Detailed explanation-3: -Cnidarians, which are a phylum of animals that include the jellyfish, corals, and sea anemones, go through two distinct life phases: polyp and medusa. During the polyp stage, the organisms are sessile, or stuck to a surface, and during the medusa stage, the organisms are free-moving.