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.
851
Some features of a respiratory surface in animals are mentioned below. Select the INCORRECT option.
RRB Group-D
02/09/2022 (Shift-II)
2022
✓ Answer:BIs very thick
An efficient respiratory surface is thin, allowing rapid diffusion of gases, and has a large surface area.
852
When does aerobic respiration take place?
RRB NTPC (Stage-I)
02/03/2021 (Shift-II)
2021
✓ Answer:DBreakdown of glucose with the use of oxygen
Aerobic respiration breaks down glucose using oxygen and releases energy, with carbon dioxide and water as overall products.
853
Which of the following gases is essential for all aerobic forms of life?
RRB Group-D
08/09/2022 (Shift-III)
2022
✓ Answer:BO₂
Oxygen is required for aerobic respiration and serves as the final electron acceptor in the respiratory electron-transport chain.
854
Diffusion is a process by which:
RRB NTPC (Stage-I)
03/03/2021 (Shift-I)
2021
✓ Answer:COxygen can move across the plasma membrane
Oxygen moves across the plasma membrane by diffusion down its concentration or partial-pressure gradient.
855
Which of the following has the fastest breathing rate?
RRB Group-D
08/09/2022 (Shift-I)
2022
✓ Answer:AFish
The source selects fish, using the textbook principle that aquatic animals ventilate rapidly because water contains less available oxygen than air. Actual rates vary by species and conditions.
856
What is exhaled in human respiration?
RRB NTPC (Stage-I)
05/04/2016 (Shift-III)
2016
✓ Answer:DCarbon dioxide
The source key selects carbon dioxide as the respiratory waste gas. Exhaled air is actually a mixture containing nitrogen, oxygen, carbon dioxide and water vapour, so option A is also scientifically valid under this wording.
857
Identify the correct labels a, b and c in the human respiratory-system diagram. Text description: a points to the passage behind the nasal and oral cavities; b points to the voice-box region; c points to the windpipe below it.
RRB Group-D
09/09/2022 (Shift-III)
2022
✓ Answer:Ca–Pharynx, b–Larynx, c–Trachea
The pharynx is the throat passage, the larynx is the voice box, and the trachea is the windpipe leading toward the bronchi.
858
What is the function of alveoli?
RRB NTPC (Stage-I)
04/02/2021 (Shift-I)
2021
✓ Answer:DTo provide a surface where exchange of gases takes place
Alveoli provide a large, thin surface where oxygen enters the blood and carbon dioxide leaves it by diffusion.
859
In renal physiology, which segment of the nephron is most important for generating the osmotic gradient that concentrates urine?
The loop of Henle establishes the osmotic gradient in the renal medulla through countercurrent multiplication, helping conserve water and concentrate urine.
860
Which of the following statements related to excretion in humans is/are incorrect? (i) In humans, the kidneys are located in the thoracic region. (ii) Urine is stored in the urinary bladder. (iii) CO₂ is removed from the blood into the lungs.
Only statement (i) is incorrect. The kidneys lie in the abdominal region, behind the peritoneum. Urine is stored in the bladder and carbon dioxide is removed through the lungs.
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