Question

Which statement is true for WBC?
(a) Non-nucleated
(b) In deficiency, cancer is caused
(c) Can squeeze through capillaries
(d) None of the above

Answer 1

Hint: WBCs have amoeboid shape and show irregular movement, which helps the cell to move and pass through obstacles easily. They defend the body from other disease-causing organisms by destroying them by phagocytosis and are eukaryotic.

Complete answer:
WBCs are very small in size and are capable of showing amoeboid movement by which they can change their shapes according to the environment needs hence they can squeeze through the walls of the blood vessels.
The passage of blood, or any of its formed elements, through the intact walls of blood vessels or capillaries, is called Diapedesis.
So, the correct answer is, ’Can squeeze through capillaries.’

Additional Information:
White blood corpuscle is also called as leucocyte, are the cells lacking hemoglobin and has a nucleus and protects the body against infection against any disease cause organism, by destroying the infectious agent by producing antibodies.
WBCs are further grouped into their major classes namely – Lymphocyte, Granulocyte, and monocyte
The lymphocyte is responsible for directly killing foreign invaders.
Monocytes migrate into the tissues and clean up the dead cells.
Granulocytes are the first line of defense and defend the body against foreign invaders. A characteristic feature of these cells is the presence of cytoplasmic granules.

Note: A normal range of a number of leucocytes in a healthy human is about 4,500 and 11,000 per cubic millimeters of blood. An abnormal inverse in the number of WBCs causes cancer and this condition is called leukocytosis and an abnormal decrease in the number of cells is called leukopenia.