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B
10 to 16
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C
16 to 20
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D
20 to 26
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Solution
The correct option is A 6 to 10 Hydra is a carnivore and feeds on nematodes, crustaceans etc. It is a sedentary animal. Tentacles are the structures that help it to draw food to the mouth and the number of tentacles may vary from 6-10.