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प्रश्न
What will happen if there are no platelets in the blood?
उत्तर १
- The platelets are responsible for clotting the blood. When an injury occurs, blood starts flowing, but it clots on its own.
- If there are no platelets, the blood will not be able to clot and keep on flowing. A huge loss of blood ultimately causes death.
उत्तर २
- The platelets found in the blood protect the body. When germs enter the body, these blood cells attack and destroy them, and the body does not suffer from disease.
- Therefore, the function of these cells is like that of a soldier. In their presence, we cannot fall ill.
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संबंधित प्रश्न
The diagrams given below are cross sections of blood vessels:
(i) Identify the blood vessels A, B and C.
(ii) Name the parts labelled 1 to 3.
(iii) Name the type of blood that flows through A.
(iv) Mention one structural difference between A and B.
(v) In which of the above vessels does exchange of gases actually take place?
Identify the odd one in each set : Haemoglobin, Glucagon, Iodopsin, Rhodopsin
Match the items given in Column
| No | Column A | Column B |
| 1 | Pituitary gland | Testosterone |
| 2 | Sulphur dioxide | Calcium |
| 3 | Seminiferous tubules | Growth hormone |
| 4 | Clotting of blood | Acid rain |
| 5 | Guttation | Sperms |
| Global warming | ||
| Magnesium | ||
| Hydathodes |
Give appropriate biological or technical terms for the following:
Squeezing out of white blood cells from the capillaries into the surrounding tissues.
Differentiate between members of the following pair with reference to phrase in bracket:
Antibodies and antibiotics (Source)
Name the following:
The soluble protein present in the blood plasma responsible for clotting.
Choose the correct answer:
Exchange of material between blood and interstitial fluid occurs only at the ________
The diagram shows different types of blood cells, Name them.
A __________
B ______________
C ____________
D _______________
E ____________
F ____________
G ______________
H ______________
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Blood group AB is universal donor.
Which of the following is/are TRUE regarding thrombocytes?
