Q. 995.0( 2 Votes )
A liquid X of colour Y circulates in the human body only in one direction : from body tissues to the heart.
Among other things, liquid X contains germs from cells and dead cells. The liquid X is cleaned of germs and dead cells by a special type of white blood cells called Z. This cleaned liquid is then put into blood circulatory system in subclavian veins.
(a) What is (i) liquid X, and (ii) colour Y ?
(b) What are Z ?
(c) The liquid X is somewhat. similar to a component of blood. Name this component.
(d) Why is liquid X not red ? .
(a) (i) Lymph (X) (ii) Light yellow (Y)
(b) Lymphocytes (Z)
(c) Plasma (C)
(d) Lymph (X) does not contain red blood cells having the red pigment called haemoglobin.
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