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प्रश्न
What makes the blood look red?
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उत्तर
- The presence of haemoglobin, a red pigment in the red blood cells (RBCs) makes blood appear red in colour.
- The haemoglobin carries oxygen and transports it to all the parts of the body.
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संबंधित प्रश्न
What are the various components of blood? State their functions.
Name the following:
Components of blood
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 |
What is the shape of RBC in human blood?
Why is the colour of the blood-red?
Who discovered the Rh factor? Why was it named so?
Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of Reason (R) is given just below it. Mark the correct statement as.
Assertion: Persons with AB blood group are called a universal recipient because they can receive blood from all groups.
Reason: Antibodies are absent in persons with AB blood group.
What prevents the backflow of blood inside the heart during contraction?
The blood leaving the tissues becomes richer in
Why is it called an artery if it does not carry oxygen-rich blood?
