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Which of the following statements about the functions and characteristics of blood cells is/are correct?
i. Basophils are the most abundant type of WBCs and play a major role in phagocytosis.
ii. Eosinophils help in resisting infections and constitute 2-3% of total WBCs.
iii. The average lifespan of erythrocytes is about 120 days before being destroyed in the liver.
iv. Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.
  • a)
    ii and iv
  • b)
    i and iii
  • c)
    iii and iv
  • d)
    i and ii
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements about the functions and characterist...
- Statement i is incorrect; basophils are the least abundant type of WBCs, not the most.
- Statement ii is correct as eosinophils do resist infections and make up 2-3% of total WBCs.
- Statement iii is incorrect; while erythrocytes do have an average lifespan of around 120 days, they are destroyed in the spleen, not the liver.
- Statement iv is correct; Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.
Thus, the correct statements are ii and iv, leading to Option A as the correct answer.
Topic in NCERT: Leucocytes and their types
Line in NCERT: "Neutrophils are the most abundant cells (60-65 per cent) of the total WBCs and basophils are the least (0.5-1 per cent) among them. Neutrophils and monocytes (6-8 per cent) are phagocytic cells which destroy foreign organisms entering the body. Eosinophils (2-3 per cent) resist infections and are also associated with allergic reactions."
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Community Answer
Which of the following statements about the functions and characterist...
Overview of Blood Cell Functions
Understanding the functions and characteristics of blood cells is essential for grasping human physiology. Let's analyze each statement provided.
Statement Analysis
  • i. Basophils are the most abundant type of WBCs and play a major role in phagocytosis.
    - Incorrect: Basophils are not the most abundant; neutrophils hold that title. Additionally, basophils primarily release histamine and are involved in allergic responses, not phagocytosis.
  • ii. Eosinophils help in resisting infections and constitute 2-3% of total WBCs.
    - Correct: Eosinophils are indeed involved in combating parasitic infections and allergic reactions, making up about 2-3% of the white blood cell count.
  • iii. The average lifespan of erythrocytes is about 120 days before being destroyed in the liver.
    - Incorrect: While the lifespan of erythrocytes (red blood cells) is approximately 120 days, they are typically destroyed in the spleen, not the liver.
  • iv. Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.
    - Correct: Both neutrophils and monocytes are key players in the immune system, engaging in phagocytosis to eliminate pathogens.

Final Conclusion
Based on the analysis, the correct statements are ii and iv. Therefore, the answer is option 'A'. Understanding these roles helps in comprehending how the immune system functions and responds to various pathogens.
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Which of the following statements about the functions and characteristics of blood cells is/are correct?i. Basophils are the most abundant type of WBCs and play a major role in phagocytosis.ii. Eosinophils help in resisting infections and constitute 2-3% of total WBCs.iii. The average lifespan of erythrocytes is about 120 days before being destroyed in the liver.iv.Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.a)ii and ivb)i and iiic)iii and ivd)i and iiCorrect answer is option 'A'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following statements about the functions and characteristics of blood cells is/are correct?i. Basophils are the most abundant type of WBCs and play a major role in phagocytosis.ii. Eosinophils help in resisting infections and constitute 2-3% of total WBCs.iii. The average lifespan of erythrocytes is about 120 days before being destroyed in the liver.iv.Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.a)ii and ivb)i and iiic)iii and ivd)i and iiCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about the functions and characteristics of blood cells is/are correct?i. Basophils are the most abundant type of WBCs and play a major role in phagocytosis.ii. Eosinophils help in resisting infections and constitute 2-3% of total WBCs.iii. The average lifespan of erythrocytes is about 120 days before being destroyed in the liver.iv.Neutrophils and monocytes are phagocytic cells which destroy foreign organisms entering the body.a)ii and ivb)i and iiic)iii and ivd)i and iiCorrect answer is option 'A'. Can you explain this answer?.
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