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प्रश्न
Enumerate the structural differences between white blood cells and red blood cells.
उत्तर
| White Blood Cells | Red Blood Cells | |
| 1. | White blood cells are amoeboid. | Red blood cells are minute, biconcave, disclike structures. |
| 2. | They are nucleated cells. | They anucleated cells. |
| 3. | Haemoglobin is absent in white blood cells. |
Haemoglobin is present in red blood cells. |
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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?
What is Rh factor?
Explain the following:
Why is there no mixing of deoxygenated and oxygenated blood in the human heart normally?
Select the odd one in the following:
RBC, WBC, Blood platelets, Histone.
Choose the correct answer:
The life-span of RBC is _________
Study the following diagram carefully and then answer the question that follow :
Name the process occurring in B and C and state the importance of this process in the human body.
Explain the Term
Diapedesis
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
R.B.Cs are of several kinds whereas WBCs are of one kind.
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.
Intrinsic and extrinsic processes involve interaction of various substances called _______ by a step-wise or cascade mechanism.
