Given below are four statements (a-d) regarding human blood circulatory system:
 

(a) Arteries are thick-walled and have narrow lumen as compared to veins.
(b) Angina is acute chest pain when the blood circulation to the brain is reduced.
(c) Persons with blood group AB can donate blood to any person with any blood group under the ABO system.
(d) Calcium ions play a very important role in blood clotting.


Which two of the above statements are correct?

1. (a) and (b) 2. (b) and (c)
3. (c) and (d) 4. (a) and (d)
Subtopic:  Blood: Blood Clotting | Human Heart: Double Circulation |
 86%
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital

Match each item in Column I with the one in Column II and select the correct match from the codes given:
Column I Column II
A. Plasma P. 45 % of blood
B. Formed elements Q. 55 % of blood
C. Neutrophils R. 60-65 % of total WBCs
D. Lymphocytes S. 20-25 % of total WBCs
Codes:
A B C D
1. P Q R S
2. Q P S R
3. Q P R S
4. P Q S R
Subtopic:  Blood: General Description & RBC |
 82%
From NCERT
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 
Assertion (A): Rh incompatibility related complication does not arise in first pregnancy even if an Rh negative mother is carrying an Rh positive foetus.
Reason (R): Rh antigens are proteins.
In the light of the above statements choose the correct answer from the options given below:
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Blood: Blood Group (A,B,O) |
 73%
From NCERT
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Consider the given two statements:
I: Type O is considered to be universal donor blood type.
II: It has neither anti-A antibodies nor anti-B antibodies circulating in the plasma.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Blood: Blood Group (A,B,O) | Blood: Blood Group |
 71%
From NCERT
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Match the following major plasma proteins with their functions:
Column A Column B
1. Albumin A. Blood clotting
2. Globulin B. Colloid osmotic pressure
3. Fibrinogen C. Immune responses
Options:
1. 1-B, 2-A, 3-C 2. 1-A, 2-B, 3-C
3. 1-C, 2-A, 3-B 4. 1-B, 2-C, 3-A
Subtopic:  Blood: General Description & RBC |
 92%
From NCERT
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Which of the following statements about white blood cells (leukocytes) is NOT correct?
1. Neutrophils are the most abundant type of white blood cells in most mammals and form an essential part of the innate immune system.
2. Lymphocytes are involved in the creation of antibodies, which are crucial for the adaptive immune response.
3. Monocytes mature into macrophages and dendritic cells, which can engulf and destroy pathogens through phagocytosis.
4. Eosinophils are primarily responsible for the body's response to parasitic infections and are the predominant white blood cell type in human blood
Subtopic:  Blood: White Blood Cells |
 79%
From NCERT
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Consider the given two statements.

Statement I: Basophils are the cells involved in inflammatory reactions.
Statement II: Neutrophils and monocytes are main phagocytic leukocytes.

  
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.

Subtopic:  Blood: White Blood Cells |
 88%
From NCERT
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How many of the given statements are correct?
A: Neutrophil is the most common white blood cell in human blood.
B: Basophil is the rarest white blood cell in human blood.
C: Lymphocytes are responsible for acquired immunity in human beings.
D: Monocytes differentiate into macrophages and are phagocytic in nature.
E: A total WBC count of 20,000 per mm3 of blood will be normal.
1. 2
2. 3
3. 4
4. 5
Subtopic:  Blood: White Blood Cells |
 68%
From NCERT
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Identify the incorrect statement:
1. A person with blood group type A has type A antigens on RBC and does not have type B antigen on RBC.
2. A person with blood group type B has anti A antibodies in plasma and does not have anti B antibodies in plasma.
3. A person with type AB blood group has type A antigen and type B antigen on RBC but does not have anti A or anti B antibodies in plasma.
4. A person with blood group type O can receive blood from all types of blood group namely AB, A, B, and O.
Subtopic:  Blood: Blood Group (A,B,O) |
 91%
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All the following statements are correct except:
 
1. Neutrophils and monocytes are the main phagocytic cells in human blood.
2. Mature RBC does not have a nucleus and is biconcave disc-shaped.
3. A person with type A blood will have anti-B antibodies in his plasma.
4. Erythroblastosis foetal occurs when an Rh +ve mother is carrying an Rh –ve foetus.
Subtopic:  Blood: General Description & RBC |
 86%
From NCERT
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