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Which statement is true for WBC :
A
Non nucleated
B
In deficiency cancer is caused
C
Manufactured in thymus
D
Can squeeze through blood capillaries
Detailed Solution
White blood cells (leucocytes) are nucleated and are produced mainly in the red bone marrow (some lymphocytes mature in the thymus).
They can change shape and squeeze out through the walls of blood capillaries into the tissues. This is called diapedesis, and it lets them reach sites of infection.
A deficiency of WBCs (leucopenia) lowers immunity; leukaemia (a cancer) is associated with an excess of abnormal WBCs.
So the true statement is that WBCs can squeeze through blood capillaries.
They can change shape and squeeze out through the walls of blood capillaries into the tissues. This is called diapedesis, and it lets them reach sites of infection.
A deficiency of WBCs (leucopenia) lowers immunity; leukaemia (a cancer) is associated with an excess of abnormal WBCs.
So the true statement is that WBCs can squeeze through blood capillaries.