The organ of adhesion is:

Correct option is B

Ans. (b) Sol. The correct answer is (b) Fimbriae.
Fimbriae are short, hair-like structures on the surface of many bacteria that are involved in adhesion to surfaces, host cells, or tissues. They play a key role in bacterial colonization and are crucial for the ability of bacteria to establish infections. Fimbriae allow bacteria to adhere to the host cells, which is important for the formation of biofilms or infection sites.
Explanation of each option:
· (a) Flagella: Flagella are long, whip-like structures that help bacteria move (motility). They are not involved in adhesion but rather in enabling the bacteria to swim or move towards favorable environments.
· (b) Fimbriae: Correct answer. Fimbriae are specialized for adhesion. They help bacteria stick to surfaces, host cells, or mucosal membranes.
· (c) Nucleus: The nucleus is the membrane-bound organelle in eukaryotic cells that contains the genetic material (DNA). It is not involved in adhesion.
· (d) Mitochondria: Mitochondria are the powerhouses of eukaryotic cells, responsible for energy production (ATP). They are not involved in adhesion.
Thus, Fimbriae are the organelles responsible for adhesion.