Number and arrangement of hooks in the rostellum of Taenia solium are

12-22 in one whorl

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22-32 in two whorls

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22-32 in one whorl

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12-22 in two whorls

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Solution

The correct option is B 22-32 in two whorls
In Taenia solum the rostellum is armed with two rows of spiny hooks which are chitinous in nature. The 22 to 32 rotelllar hooks can be differentiated into short (130-µm) and long (180-µm) types. So, option B is correct.

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