A) flagella
B) cilia
C) extrachromosomal genetic element
D) outgrowth of cell membrane of donor cell
Correct Answer: D
Solution :
Pili are very fine hair like appendages arises from cell membrane. Pili are made up of protein pilin. These are present in Gram-negative bacteria. During sexual reproduction in bacteria, pile of donar bacteria attached to recepient bacteria and forms a conjugation tube through which genetic material of donar go towards recepient bacterial cell. Extra chromosomal genetic elements are known as plasmid. Flagella and cilia are organells for locomotion.
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