Persons with AB blood type can:

1. donate blood to persons with all blood types as neither A nor B antigens are present on their RBCs
2. receive blood from persons with all blood types as both A and B antigens are present on their RBCs
3. receive blood from persons with all blood types as neither A nor B antigens are present on their RBCs
4. receive blood from persons with all blood types as neither anti-A nor anti-B antibodies are present on his blood plasma
Subtopic:  Blood: Blood Group (A,B,O) |
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From NCERT
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Consider the given two statements:
Statement I: ABO grouping is based on the presence or absence of three surface antigens on the RBCs namely A, B and O.
Statement II: Rh grouping is based on the presence or absence of the type of antibody present in the plasma.
 
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is incorrect 
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is incorrect
Subtopic:  Blood: Blood Group (A,B,O) |
From NCERT
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Read the given statements and select the correct option 
 
A: White blood cells are enucleated and are relatively lesser in number which averages 6000-8000 mm-3 of blood 
B: Human heart is protected by a three walled membranous bag, pericardium 
1. Both Statements A and B are correct 
2. Both statements A and B are incorrect 
3. Only Statement A is correct 
4. Only statement B is correct 
Subtopic:  Blood: General Description & RBC |
From NCERT
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During the initiation of coagulation of blood, the platelets are activated by–
1. Thrombin
2. Trauma
3. Ca++
4. Thrombokinase

Subtopic:  Blood: Blood Clotting |
From NCERT
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NEET 2026 - Target Batch - Vital
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Assertion(A): A decrease in lymphocyte count in the blood will lead to an
increased susceptibility to infections.
Reason(R): Lymphocytes are responsible for phagocytosis in innate immune response.
 
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. (A) is False but (R) is True.
Subtopic:  Blood: General Description & RBC |
From NCERT
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The principal solute, dissolved in the plasma portion of the blood as well as the extracellular fluid (ECF), amongst the following, will be:
1. haemoglobin
2. Na+
3. K+
4. albumin
Subtopic:  Lymph | Blood: General Description & RBC |
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From NCERT
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Consider the given two statements:
Assertion (A): The O blood group is considered the universal donor.
Reason (R): Both anti-A and anti-B antibodies are present in the plasma of a person with blood group O.
 
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. (A) is False but (R) is True.
Subtopic:  Blood: Blood Group (A,B,O) |
 51%
From NCERT
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Which of the following cells of areolar connective tissue are also present in blood?
1. Fibroblasts
2. Eosinophils
3. Macrophages
4. Mast cells
Subtopic:  Blood: White Blood Cells |
From NCERT
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Consider the given two statements
Statement I: Lymph is a colourless fluid containing specialized lymphocytes which are responsible for the immune responses of the body.
Statement II: Lymph carries oxygen and nutrients to the tissues.
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic:  Lymph |
From NCERT
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If the SA node in the human heart does not function:

1. it will always lead to cardiac arrest
2. the heart rate will be increased due to unopposed sympathetic activity
3. the heart rate will be decreased due to unopposed parasympathetic activity
4. most likely a group of cells further down the heart will become its pacemaker
Subtopic:  Human Heart: Gross Anatomy |
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