Cilia are minute, hair-like processes on the surface of protozoans or on metazoan cells. Each cilium contains a peripheral circle of nine doubled microtubules arranged around two single microtubules. Each microtubule is composed of tubulin proteins. The mechanism of ciliary movement is not completely understood. The fluxes of Ca2+ across the membrane are not responsible for controlling the organised beating of cilia.
Which of the following statements regarding cilia is not correct?
NEET UG 2006 — Botany Cell - The Unit of Life
2006mcqmedium
Which of the following statements regarding cilia is not correct?
Official previous-year question
Held on 30 Apr 2006 · Verified 9 Jul 2026.
Options
- A
cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules.
- B
the organized beating of cilia is controlled by fluxes of Ca2+ across the membrane
- C
cilia arc hair-like cellular appendages
- D
microtubules of cilia are composed of tubulin
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