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Question

Special character of coelenterates/Hydra is

A
Hermaphroditism
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B
Nematocysts
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C
Polymorphism
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D
Flame cells
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Solution

The correct option is C Nematocysts
Coelenterates like Hydra have a specialized stinging apparatus called nematocysts that are present in cnidoblasts/cnidocytes and help in defense primarily. These nematocysts are sensitive to mechanical stimulus and can release neurotoxin on trigger to paralyze its prey or incoming danger.
So, the correct answer is 'Nematocysts'.

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