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.
1
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.
2
Dialysis removes waste products from blood when normal kidney function is affected. Arrange the given steps in the correct sequence: a. Line to vein; b. Patient's blood passed through a tank with dialysing fluid; c. Line from artery; d. Waste products from blood pass into dialysing fluid; e. Dialysing fluid has the same osmotic pressure as blood except the wastes.
RRB Group-D
17/09/2022 (Shift-I)
2022
✓ Answer:Ac-b-e-d-a
The source sequence is c-b-e-d-a: blood enters the dialyser, is exposed across a membrane to appropriately composed dialysate, loses wastes and returns to the vein. Statement e describes the fluid rather than a separate timed step.
3
Select the correct labels a, b, c and d in the nephron diagram. Text description: a marks the blood vessel entering the renal corpuscle; b marks the capillary tuft inside it; c marks the cup surrounding that tuft; d marks the vessel draining the capillary network.
RRB Group-D
20/09/2022 (Shift-II)
2022
✓ Answer:Ba - Branch of renal artery, b - Glomerulus, c - Bowman's capsule, d - Branch of renal vein
The incoming vessel is a branch of the renal artery, the tuft is the glomerulus, the surrounding cup is Bowman's capsule and the draining vessel leads toward the renal vein.
4
Urine is composed of _____ water.
RRB Group-D
30/08/2022 (Shift-III)
2022
✓ Answer:D95%
Typical urine is approximately 95% water. The remaining portion contains urea, salts and other dissolved substances.
5
Which of the following substances is NOT reabsorbed by the kidneys?
RRB Group-D
18/09/2022 (Shift-III)
2022
✓ Answer:BCreatinine
Creatinine is filtered and a small amount is secreted into the tubules. It is not appreciably reabsorbed, unlike glucose, amino acids and needed salts.
6
Which of the following options related to the excretory system of humans is not correctly matched?
Humans normally have two kidneys, two ureters, one urinary bladder and one urethra. The urethra is unpaired.
7
Which part is the collecting duct in the nephron diagram? Text description: a labels the straight vertical duct on the left; b labels the cup-shaped structure on the upper right; c labels the segment joining the tubule to the straight duct; d labels the long U-shaped tubular region.
RRB Group-D
19/09/2022 (Shift-III)
2022
✓ Answer:ARegion a
Region a is the collecting duct, which receives fluid from nephrons and conveys it toward the renal pelvis.
8
In human beings, excretory products in the form of soluble nitrogen compounds are removed by the _____ in the kidneys.
RRB NTPC (Stage-I)
21/01/2021 (Shift-I)
2021
✓ Answer:CNephrons
Nephrons filter blood and form urine through filtration, selective reabsorption and secretion, removing nitrogenous wastes.
9
Which of the following removes nitrogenous waste products produced by metabolic activities in humans?
RRB ALP (Stage-I)
28/11/2024 (Shift-II)
2024
✓ Answer:BExcretory system
The excretory system removes nitrogenous wastes such as urea, mainly through urine formed by the kidneys.
10
The kidney is an organ of excretion and osmoregulation in humans. Regulation of which two substances is done by the kidneys?
RRB Group-D
23/08/2022 (Shift-I)
2022
✓ Answer:DWater and salts
The kidneys regulate water and electrolyte balance by adjusting reabsorption and excretion.
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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