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प्रश्न
What would happen if platelets were absent in the blood?
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उत्तर
Platelets cause blood to clot. Blood will not clot if platelets are missing. Blood flow cannot be halted without clotting in the event of an injury, and this can be deadly.
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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?
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 |
Given below is certain structure, write the term for the functional activity.
Bone marrow and ………………………………..
Name the following:
The cells that initiate blood clotting.
Differentiate between members of the following pair with reference to phrase in bracket:
serum and vaccine (Composition)
What are the main steps in coagulation of blood?
Given below is a diagram of a smear of human blood. Study the same and answer the question that follow:
What is the main function of the parts labeled 1, 2 and 3 respectively?
Study the following diagram carefully and then answer the question that follow:
Identify the phenomenon occurring in A.
Why does the number of leucocytes increase during infection?
Differentiate between:
Blood plasma and Serum.
Name the Following
The instrument by which RBC are counted is called.
Give Technical Term for the following:
Name the metallic element present in red blood cells.
The soluble protein present in blood plasma responsible for blood clotting.
Complete the following sentence with appropriate word:
Non-coagulation of blood is called ___________.
Complete the following sentence with appropriate word:
When oxygen is in fairly high concentration, the haemoglobin quickly combines with it and forms an unstable compound known as _______________.
Complete the following sentence with appropriate word:
The element required for blood clotting is __________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The average life of red blood cells in our body is about 120 hours.
State the Function: Thrombocytes
Choose the Odd One Out:
