AIIMS 2016
- Exam
- AIIMS
- Year
- 2016
- Subject
- Botany
- Chapter
- Biological Classification
AIIMS 2016 · Botany · Biological Classification
Assertion : Pili are tubular structures present in bacteria which...
Assertion : Pili are tubular structures present in bacteria which help in conjugation.
Reason : Formation of pili is controlled by or fertility factor .
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
Step-by-step solution
Pili are long and thick tubular outgrowths, which develop in response to or fertility
factor in Gram negative bacteria. They are made up of protein pilin. A donor bacterial cell having fertility factor develops 1-4 pili. Pili are helpful in attaching to recipient cell and forming conjugation tube.