The principal protein of cilia and flagella is

Centrosome is found in

Study the diagram properly and select the correct option for labelled parts $A, B, C$ and $D$.

Which organelle is present in all animal cells?

The centrosome is not involved in the formation of which of the following?

Study the following statements on cilium or flagellum and answer the question.
$(i)$ Cilium / Flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.
$(ii)$ Cilia are smaller which work like oars,causing the movement of either the cells or surrounding fluid.
$(iii)$ Flagella are comparatively longer and responsible for cell movement.
$(iv)$ Cilium and flagellum are covered with plasma membrane. Which of the above statements are correct?