Class 12 Biology Ecology Kingdom - Monera And Viruses
The structure that help some bacteria to attach to rocks and host tissues are
(a)
rhizoids
(b)
fimbriae
(c)
mesosomes
(d)
holdfast
Correct answer: (b) 
Solution: Fimbriae are small bristle like fibres sprouting out of the cell. In some bacteria, they are known to help is attachment to rocks in streams and also to the host tissues.

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ecosystem
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