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Questions
Distinguish between Blood and lymph.
Mention two differences between blood and lymph?
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Solution
| Blood | lymph | ||
| 1. | It is reddish in colour. | 1. | It is pale yellow in colour. |
| 2. | It has two main components - fluid plasma and formed elements (blood cells). | 2. | It has an almost similar composition to the blood except for RBCs, platelets, and some proteins. |
| 3. | It flows through blood vessels. | 3. | It flows through lymph vessels. |
| 4. | It transports materials from one organ to another. | 4. | It transports material from tissue cells to blood and vice-versa. |
| 5. | Lymphocytes are present | 5. | Lymphocytes are present, more in number than those present in the blood. |
Notes
Students should refer to the answer according to their question.
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| 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 the blood circulatory system in subclavian veins. |
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