Question

Cilium or flagellum is structurally bilateral due to presence of ________.

• A. Central sheath
• B. Singlet fibrils
• C. Double bridge
• D. Both B and C

Answer 1

The correct option is D Both B and C

D. Both B and C

Reason : Cilium and flagellum are hair-like outgrowths found in many microorganisms like bacteria, protozoa, etc. It helps the microorganisms in various ways as swimming, adhering on different surfaces. Those are bilateral in structure. The two central singlet fibrils are covered by a proteinaceous central sheath. They are connected by a double bridge. Each peripheral fibril consists of two microtubules.

So the correct option is D.