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Question

The structures that help some bacteria to attach to rocks and/or host tissues are

A
Rhizoids
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B
Fimbriae
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C
Mesosome
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D
Holdfast
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Solution

The correct option is B Fimbriae
Fimbriae are also called attachment pilus. It is found on the surface of many Gram-negative and some Gram-positive bacteria. It is thinner and shorter than a flagellum. Its main function is the attachment. It helps some bacteria to attach to rocks and/or host tissues. It plays a major role in bacterial virulence.
Thus, the correct answer is 'Fimbriae.'

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