Transportation of Food and Minerals in Animals and Plants — BIOLOGY STD 8 — Question
ICSE BoardEnglish MediumSTD 8BIOLOGYTransportation of Food and Minerals in Animals and Plants3 Marks
Question
What is lymph ? How is it different from blood ?
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Answer
When blood reaches the capillaries, some of the water and dissolved solutes are filtered out from blood plasma into tissue spaces to form tissue fluid. Some of the tissue fluid enters tiny channels called lymph vessels and the fluid collected in them is called lymph. Basically, lymph has all the elements of blood except $\text{RBCs}$ and blood platelets.
Difference between Lymph and Blood :
Lymph :
It is slightly yellowish in colour. It lacks haemoglobin.
It also lacks platelets.
It has lymphocytes.
It do not has erythrocytes. .
It flows in lymph vessels and also bathes various body tissues.
Plasma proteins are absent or very low in proteins. concentration.
Blood :
It is red in colour due to presence of haemoglobin.
It has platelets.
It does not has lymphocytes.
It has erythrocytes.
It flows in blood vessels.
It contains many plasma proteins
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