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प्रश्न
What are the components of blood?
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उत्तर १
- The main components of blood are -
- plasma
- blood cells (Red blood corpuscles):
- Plasma is the fluid part of blood in which the blood cells are suspended. The plasma contains water, minerals, nutrients, proteins, etc.
- Blood cells are of three types -
- RBCs (Red blood cells),
- WBCs (White blood cells)
- blood platelets.
उत्तर २
There are four components of blood:
- Plasma is a liquid part of blood which is yellowish in colour and contains 90% water. It contains food, enzymes, wastes proteins etc.
- Red blood cells are disc-shaped cells containing red-coloured pigment called haemoglobin in it. Haemoglobin helps in the transportation of oxygen.
- White blood cells are the fighting cells which protect us against bacteria and foreign materials causing infections.
- Platelets help in clotting of the blood.
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संबंधित प्रश्न
The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.
(a) What is (i) tissue A (ii) pigment B, and (iii) colour C?
(b) Name (i) D (ii) E (iii) F, and (iv) G.
(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.
(d) Which two components of tissue A are the cells without nucleus?
(e) Name any two organisms ( animals) which do not have liquid like A in their body.
State the Function: Vitamin K
Match the following.
| 1. Leukaemia | (a) Thrombocytes |
| 2. Platelets | (b) Phagocyte |
| 3. Monocytes | (c) Decrease in leucocytes |
| 4. Leucopenia | (d) Blood Cancer |
| 5. AB blood group | (e) Allergic condition |
| 6. O blood group | (f) Inflammation |
| 7. Eosinophil | (g) Absence of antigen |
| 8. Neutrophils | (h) Absence of antibody |
All veins carry deoxygenated blood.
Why are leucocytes classified as granulocytes and agranulocytes? Name each cell and mention its functions.
The volume of blood in human adults is ______.
Crab has blue blood.
Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.
Least abundant leucocyte is ______.
Define the following term:
Blood
