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Why do hydras use its stinging cells?

User Tjofras
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2 Answers

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I would say that "The hydra uses these barbed, poisonous cells to catch and "parolize" there prey such as water fleas and plankton."
hope it helps

User Steven Smethurst
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The hydra uses these barbed, poisonous cells to catch and stun prey such as water fleas and plankton.
User Nal
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