Question

Which of the following statements is correct with respect to flagella and cilia?

A) The flagellum is usually at the leading end of a swimming sperm cell.
B) Cilia generate a force parallel to the cell surface.
C) There usually are fewer cilia than flagella.
D) Cilia generally are longer than flagella.
E) Cilia often have a helical pattern of movement.

Answer 1

Cilia are short and found in large numbers on the cell surface, while flagella are long and fewer in number. Cilia move substances along the outer surface of the cell, while flagella move entire cells.

Step-by-step explanation:

Cilia are short, hair-like structures that are found in large numbers on the cell surface, while flagella are long and fewer in number. Cilia move entire cells or substances along the outer surface of the cell, such as the cilia in the respiratory tract that move particulate matter toward the throat. Flagella, on the other hand, move an entire cell, like sperm or Euglena.