Which of the following is correct for the given structure ?

Options

A. (a) These are small structures which work like oars.
B. (b) It is covered with plasma membrane.
C. (c) Its core is called axoneme.
D. (d) All of these

Answer

D

Explanation

Cilia and flagella are hair -like outgrowths of the cell membrane. Cilia are small structures working like oars, causing the movement of either the cell or the surrounding fluid. Flagella in comparison are longer and responsible for cell moivement. Both cilium and flagellum are covered with plasma membrane. Their core called axoneme, possesses a number of microtubules running parallel to the long axix.