Question

Which of the following is characteristic of cilia?

A. They are whiplike, motile cellular extensions that occur in large numbers on the exposed surfaces of certain cells.
B. They are used for cellular adhesion.
C. They are substantially longer than flagella, and are less common than flagella in humans.
D. They move substances in many directions across a cell's surfaces.

Answer 1

Answer:

A

Cilia occurs in large amount of numbers and are smaller even than the flagella.

Answer 2

Answer: Option A

Explanation:

Cilia are wipe like, motile structure that are generally cellular extensions that are present in large numbers.

They are found on the eukaryotic cells and are slender structures that projects out of the cell. They may be motile or non-motile.

These are found in the lungs, ears and lungs that helps in the adhesion of harmful particles.