Question

The structures that help some bacteria to attach to rocks and/ or host tissues are:
(a) Fimbriae (b) Mesosomes (c) Holdfast (d) Rhizoids

Answer 1

The correct option is   (a) Fimbriae

Fimbriae are small bristle like fibres sprouting out of the cell. In some bacteria, they are known to attach to rocks or host tissues.

Answer 2

Answer:

• Fimbriae

Explanation:

• Pili  and  fimbriae  are  bacterial  appendages which are not involved in locomotion.
• Actually, pili are long, fewer and thick tubular outgrowths which develop in response to F+  or fertility factor in Gram negative bacteria.
• Being long they are helpful in attaching to recipient cell and forming conjugation tube. Fimbriae are small bristle-like fibers sprouting from cell surface in large number.
• There are 300-400 of them per cell. They are involved in attaching bacteria to solid surfaces.