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.
111
What should be the pH range of blood for normal health?
RRB NTPC (Stage-I)
05/04/2016 (Shift-II)
2016
✓ Answer:C7.35 to 7.45
Normal human blood pH is approximately 7.35–7.45, with an average near 7.4, making it slightly alkaline.
112
The smallest blood vessel is called:
RRB NTPC (Stage-I)
03/04/2021 (Shift-II)
2021
✓ Answer:BCapillary
Capillaries are the smallest blood vessels. They connect arterioles to venules and permit exchange of gases, nutrients and wastes with tissues.
113
Which of the following can be compared to soldiers?
White blood cells, also called leukocytes, defend the body against pathogens and participate in immune responses.
114
The wall of the ventricle is _____ than the wall of the atrium.
RRB JE
2014
✓ Answer:AThicker
Ventricles require thicker muscular walls because they pump blood out of the heart, whereas atria mainly pump blood into the ventricles.
115
Karl Landsteiner is known for:
RRB NTPC (Stage-I)
07/04/2021 (Shift-I)
2021
✓ Answer:BDiscovery of blood group classification
Karl Landsteiner is known for discovering the ABO blood-group system.
116
Which of the following is not true about WBCs?
RRB Group-D
10/10/2018 (Shift-II)
2018
✓ Answer:ASize: 18–24 µm
The source identifies the stated size as incorrect. White blood cells vary in size by type, so a single range of 18–24 µm does not describe all WBCs.
117
Which of the following statements is INCORRECT?
RRB NTPC (Stage-I)
18/01/2021 (Shift-II)
2021
✓ Answer:CBlood helps in sensory inputs
Sensory input is received and transmitted by the nervous system. Blood transports substances and contributes to immune defence.
118
Which of the following is not true about the vascular system?
RRB Group-D
03/10/2018 (Shift-I)
2018
✓ Answer:DBlood is white or red vascular connective tissue
The source key identifies D: human blood is red fluid connective tissue. The percentage in B refers to blood mass, and the volume in A varies with body size.
119
The heart is covered by two layers of membranes. What are these membranes called?
RRB Group-D
01/11/2018 (Shift-II)
2018
✓ Answer:BPericardial membrane
The pericardium surrounds the heart. Its serous layers enclose lubricating fluid that reduces friction during heartbeats.
120
What are the micro-tubules called through which blood flows from the arteries into the veins?
RRB JE
22/05/2019 (Shift-II)
2019
✓ Answer:CCapillaries
Capillaries are the smallest blood vessels. They connect arterioles to venules and permit exchange of gases, nutrients and wastes with tissues.
Showing 111 – 120 of 127 MCQ Questions | Page 12 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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