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Assertion : The fimbriae are elongated...

Assertion : The fimbriae are elongated tubular structures made of a special protein.
Reason : The pili are small bristle like fibres sprouting out of the cell.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
Pili and fimbriae are surface structures of the bacteria but do not play a role in motility. The pili are elongated tubular structures made of a special protein (pilin). Pili develop in response to `F^(+)` or fertility factor in Gram negative bacteria. The fimbriae are small bristle-like fibres sprounting out of the cell. Fimbriae are involved in attaching bacteria to solid surfaces or host tissues.
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