Assertion :Pili are tubular structures present in bacteria which help in conjugation. Reason: Formation of pili is controlled by $F^{+}$ or fertility factor.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Pili is a hair-like appendage present on the surface of bacteria. It is made up of pilin protein. The primary function of pili to attach a bacterial cell at a specific surface or other cells. Pili also help in the transfer of DNA from a donor cell to the recipient cell through the process of conjugation, these type of pili sometime called sex pili because they allow the exchange of gene. Pilus of E.coli encoded by the fertility factor.
So, the correct option is 'Both assertion and reason are correct and reason is the correct explanation for assertion'.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

{SiO}_{2}

{CaCO}_{3}

CaO

{CaCO}_{3}

{SiO}_{2}

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

H e

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