AP BIOLOGY

Detailed explanation-1: -White blood cells and red blood cell both can change its shape. WBC is irregular in shape. They change its shape to engulf or kill bacteria which enter the blood to prevent diseases. RBC change its shape that it allows the red blood cells to pass through the capillaries that are very tiny.

Detailed explanation-2: -Now, as we have seen that different types of WBC or leukocytes have differently shaped nuclei, we can say that usually, the shape of the nucleus of WBC or leukocytes is irregular.

Detailed explanation-3: -White blood cells are colourless and keep on changing their shape so they do not have any definite shape.

Detailed explanation-4: -White blood cells are part of our immune system and circulate in the bloodstream. But whenever required at the site of infection the white blood cells can migrate through the walls of small blood vessels to reach tissues. This can only occur because the white blood cells are able to change shape .

Detailed explanation-5: -One of the examples of an irregularly shaped cell is Amoeba. Amoeba is a single-celled organism.