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प्रश्न
Study the following diagram carefully and then answer the questions that follow:
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- Name the cell labelled 1.
- Identify the phenomenon occurring in A.
- Mention two structural differences between 1 and 2.
- Name the process occurring in B and C and state the importance of this process in the human body.
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उत्तर
- Red blood cells
- WBC squeezing through the wall of the capillary in the tissue. (Diapedesis).
- White blood cells, also known as leukocytes, have a nucleus but lack haemoglobin.
- The process that occurs in B and C is phagocytosis. In this process, the WBCs engulf and destroy the foreign particles, thus preventing disease occurrence.
संबंधित प्रश्न
Oxygen combines with haemoglobin present in RBC and forms _____.
The blood vessel that begins and ends in capillaries is the ______.
Given alongside is a diagram of a smear of human blood. Study the same and answer the questions that follow:
 |
- Name the parts l, 2, 3 and 4 indicated by guidelines.
- Mention two structural differences between the parts labelled 'l' and '2'.
- What is the main function of the parts labelled 1, 2 and 3 respectively?
- What is the life span of the part labelled '1'?
- Name a soluble protein found in '4' which helps in the clotting of blood.
The mineral element essential for the clotting of blood.
Complete the following sentence with appropriate word:
The site of production of W.B.Cs in the embryo is _________
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:
The average life of red blood cells in our body is about 120 hours.
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.
Multiple Choice Questions
What will happen if the spleen of a man is removed?
Multiple Choice Questions
Which protein is used in preventing clotting of blood?
