Practice Excretory 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 the human excretory system, kidneys, urinary organs, urine formation and removal of metabolic wastes from the body.
The questions cover important areas such as the kidneys, nephrons, ureters, urinary bladder, urethra, urine formation, filtration, reabsorption, secretion and the role of kidneys in maintaining the body’s internal balance. These concepts are important for General Science and Biology preparation for Railway examinations.
Start practicing Excretory System RRB PYQs with answers and explanations and strengthen your Railway Biology preparation.
11
The kidneys are not only excretory organs but also complementary to _____.
RRB SSE
21/12/2014
2014
✓ Answer:ALiver
The liver converts ammonia into urea. The kidneys then remove urea from the blood and excrete it in urine, complementing the liver's role.
12
Which of the following connects the kidney to the urinary bladder?
The source answer is urea, a nitrogenous waste. Glucose, amino acids and needed salts are selectively reabsorbed. Urea is also partly reabsorbed and recycled, so the wording is a simplification.
16
Which diagram correctly shows the tubes connecting to the urinary bladder? Text descriptions: Diagram 1 shows two separate tubes entering the bladder and one outlet below; Diagram 2 shows the upper tubes joining before entering the bladder; Diagram 3 shows upper tubes continuing around the bladder's sides; Diagram 4 shows the upper tubes overlapping above the bladder.
RRB Group-D
28/09/2022 (Shift-III)
2022
✓ Answer:BDiagram 1
Diagram 1 correctly shows two ureters entering the bladder and one urethra leaving it. The source question calls the upper tubes 'urethras', but they are ureters.
17
The nephron is associated with the:
RRB JE
14/12/2014
2014
✓ Answer:DExcretory system
Nephrons are kidney units responsible for urine formation and are part of the excretory system.
18
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.
19
A normal adult human being produces _____ mL of urine per day.
RRB Group-D
28/09/2022 (Shift-I)
2022
✓ Answer:D1000-2000
Typical daily adult urine output is approximately 1-2 litres, depending on fluid intake and other factors.
20
Which organ converts toxic ammonia into urea in humans?
RRB NTPC (Stage-I)
30/04/2016 (Shift-II)
2016
✓ Answer:BLiver
The liver converts ammonia generated during amino-acid metabolism into urea through the urea cycle.
Each question includes the correct answer and a clear explanation, helping you understand the concept behind the answer and revise important Biology topics effectively. Practising Excretory System Previous Year Questions can also help you become familiar with the types of Biology questions asked in RRB examinations.
Whether you are preparing for RRB NTPC Excretory System PYQ, RRB Group D Excretory System PYQ, RRB JE Excretory System PYQ, RRB ALP Excretory System PYQ, or RRB Technician Excretory System PYQ, practice these previous year questions regularly to strengthen your Biology preparation.
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