Practice RRB JE Biology PYQ questions from previous Railway Recruitment Board examinations. This Biology question collection is designed for candidates preparing for the RRB JE examination and covers important Biology concepts relevant to the General Science section.
This collection includes RRB JE Physics PYQ, previous year questions, and important practice questions designed to help candidates revise important Physics concepts and become familiar with the types of questions asked in Railway examinations.
The RRB JE Biology PYQ collection includes previous year questions with the correct answer and clear explanation, helping you understand important concepts and revise Biology in an exam-oriented way. Solving previous year questions can also help you become familiar with the types of questions asked in RRB JE examinations.
Practice questions from important areas of The RRB JE Biology Question, including Cell, Tissues, Human Body, Plant Biology, Animal Kingdom, Classification, Life Processes, Nutrition, Respiration, Reproduction, Diseases, Genetics, Ecology and other important Biology concepts.
Whether you are looking for RRB JE Biology PYQ, RRB JE Biology Questions, RRB JE Biology MCQs, or RRB JE Biology Previous Year Questions with Answers, this collection provides focused practice for your Railway exam preparation.
Start practicing RRB JE Biology PYQs with answers and explanations and strengthen your General Science preparation for the RRB JE exam.
761
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.
762
_____ 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.
763
_____ 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.
764
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.
765
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.
766
_____ 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.
767
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.
768
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.
769
Why is the pulse rate of the human body examined?
RRB NTPC (Stage-I)
30/04/2016 (Shift-I)
2016
✓ Answer:ATo check the functioning of the heart
The pulse reflects the rate and rhythm of heartbeats and helps assess cardiac function.
770
How many litres of blood does an adult human have?
RRB NTPC (Stage-I)
18/04/2016 (Shift-I)
2016
✓ Answer:C5
An average adult has approximately 5 litres of blood, although volume varies with body size.
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