Biological Classification Question 17
17. The structures that help some bacteria to attach to rocks and / or host tissues are:
[2015 RS]
(a) Fimbriae
(b) Mesosomes
(c) Holdfast
(d) Rhizoids
Show Answer
Answer : a
Hints & Solutions
(a) Fimbriae assist some bacteria in attaching to rocks or host body for obtaining establishment and nutrition. A holdfast is a root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
