The poisonous fluid present in nematocyst of Hydra is
A
Toxin
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B
Venom
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C
Hematin
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D
Hypnotoxin
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Solution
The correct option is D Hypnotoxin The nematocysts in Hydra is filled up with a poisonous fluid, known as hypnotoxin, which is protein in nature. Penetrant, the largest nematocysts in Hydra produce hypnotoxin.