Practice Blood Circulatory System RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Biology question set covers important concepts related to blood, the human circulatory system, heart, blood vessels and the transportation of substances in the human body.
The questions cover important areas such as components of blood, red blood cells, white blood cells, platelets, plasma, blood groups, the structure and functions of the heart, arteries, veins, capillaries, circulation of blood and pulse. These concepts are important for General Science and Biology preparation for Railway examinations.
Whether you are preparing for RRB NTPC Blood Circulatory System PYQ, RRB Group D Blood Circulatory System PYQ, RRB JE Blood Circulatory System PYQ, RRB ALP Blood Circulatory System PYQ, or RRB Technician Blood Circulatory System PYQ, practice these previous year questions regularly to strengthen your Biology preparation.
Start practicing Blood Circulatory System RRB PYQs with answers and explanations and strengthen your Railway Biology preparation.
91
The largest corpuscles in human blood are _____.
RRB Group-D
27/09/2018 (Shift-III)
2018
✓ Answer:DWhite cells
White blood cells are generally larger than red blood cells and platelets. Monocytes are the largest circulating white blood cells.
92
The average weight of an adult human heart is about:
RRB NTPC (Stage-I)
03/03/2021 (Shift-I)
2021
✓ Answer:B300 gm
An adult heart typically weighs roughly 250–350 grams; 300 grams is the best option.
93
Which of the following does not refer to cholesterol?
RRB NTPC (Stage-I)
11/04/2016 (Shift-II)
2016
✓ Answer:CRhesus factor
The source key identifies Rhesus factor, which refers to blood-group antigens rather than cholesterol transport. Option D is reproduced as printed but appears corrupted in the source.
94
_____ does not have collagen.
RRB Group-D
16/10/2018 (Shift-III)
2018
✓ Answer:BBlood
Unlike many connective tissues, circulating blood normally lacks collagen fibres in its fluid matrix. The other organs contain collagen in supporting tissues.
95
_____ tissue changes the diameter of the blood vessel.
RRB ALP & Technician
30/08/2018 (Shift-I)
2018
✓ Answer:BMuscle
Smooth muscle in vessel walls contracts or relaxes to change the vessel's diameter.
96
Which of the following organs of the human body has the sinoatrial node?
RRB NTPC (Stage-I)
12/04/2016 (Shift-I)
2016
✓ Answer:BHeart
The sinoatrial node lies in the right atrium and acts as the heart's natural pacemaker.
97
Which of the following metals is present in haemoglobin?
RRB Group-D
05/12/2018 (Shift-II)
2018
✓ Answer:AFe
Iron (Fe) is present in the haem groups of haemoglobin and enables oxygen binding. It is essential for normal haemoglobin formation.
98
_____ is the part of blood that contains 92% water, while the remaining 8% contains protein, minerals, hormones, enzymes and other substances.
RRB ALP & Technician
31/08/2018 (Shift-II)
2018
✓ Answer:DPlasma
Plasma is the liquid portion of blood, consisting mainly of water with dissolved proteins and other substances.
99
Who discovered the A, B and O blood group system?
RRB NTPC (Stage-I)
16/04/2016 (Shift-III)
2016
✓ Answer:CKarl Landsteiner
Karl Landsteiner discovered the ABO blood-group system by studying differences in red-cell agglutination.
100
Cardiac muscle cells are:
RRB Group-D
16/11/2018 (Shift-II)
2018
✓ Answer:BCylindrical, branched and uninucleated
Cardiac muscle cells are branched and striated and typically have one central nucleus, though some have two.
Showing 91 – 100 of 127 MCQ Questions | Page 10 of 13
Tags: Blood Circulatory System RRB Biology PYQ, Blood Circulatory System Previous Year Questions, RRB NTPC Blood Circulatory System PYQ, RRB Group D Blood Circulatory System PYQ, RRB JE Blood Circulatory System PYQ, RRB ALP Blood Circulatory System PYQ, RRB Technician Blood Circulatory System PYQ, Blood Circulatory System Questions for Railway Exams, Blood Circulatory System MCQ for RRB Exams, Human Circulatory System RRB PYQ
The questions cover important areas such as components of blood, red blood cells, white blood cells, platelets, plasma, blood groups, the structure and functions of the heart, arteries, veins, capillaries, circulation of blood and pulse. These concepts are important for General Science and Biology preparation for Railway examinations.
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