Different cells possess different shapes. These shapes are mostly related to the functions per formed by the respective cells. With reference to this statement, justify the shapes of the following cells.
(a) Sperm cell
(b) WBC
(c ) Guard cells of stomata

Explanation

(a) Sperm cell has an oval-shaped head with a long tail attached to it. The tail part enables easy movement of the sperm in the genital tract of females. The head part helps the sperm to penetrate into the ovum.
(b) WBCs are usually irregular and amoeboid in shape. They can change their shapes to enable them to reach the site of injury or infection because they are involved in the function of acting on the microorganisms that cause infection.
(c ) The guard cells of stomata are bean or kidney shaped. This facilitates closing and opening of stomata for gaseous exchange during photosynthesis or respiration or transpiration.