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प्रश्न
Study the following diagram carefully and then answer the questions that follow:
 |
- 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.
संक्षेप में उत्तर
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.
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