Pili in bacteria represent

Extra-chromosomal genetic element

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Protoplasmic outgrowths of donor cells

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Small flagella

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Special bacterial cilia

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Solution

The correct option is B Protoplasmic outgrowths of donor cells
Pili is a protoplasmic outgrowth from bacteria that transfers the genetic material to another bacterial cell. Pili serves many functions in bacteria. They help to swarm bacteria to adhere to the surface, also have a role in DNA transfer (conjugation), and in import and export.
Thus, the correct answer is option (B).

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