Practice Digestive 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 digestive system, digestive organs, digestive glands, enzymes and the process of digestion.
The questions cover important areas such as the mouth, oesophagus, stomach, small intestine, large intestine, liver, pancreas, salivary glands, bile, digestive enzymes, absorption of nutrients and the functions of different parts of the digestive system. These concepts are important for General Science and Biology preparation for Railway examinations.
If you are preparing for RRB NTPC Digestive System PYQ, RRB Group D Digestive System PYQ, RRB JE Digestive System PYQ, RRB ALP Digestive System PYQ, or RRB Technician Digestive System PYQ, practice these previous year questions regularly to strengthen your Biology preparation.
Start practicing Digestive System RRB PYQs with answers and explanations to strengthen your Railway Biology preparation.
11
Which is the correct order of food movement through the digestive tract?
RRB Technicians Grade-III
20/12/2024
2024
✓ Answer:AMouth - Oesophagus - Stomach
Swallowed food passes from the mouth through the pharynx and oesophagus to the stomach.
12
Which tissue covers the lining of the mouth and oesophagus?
RRB Technicians Grade-III
23/12/2024 / Shift III
2024
✓ Answer:BStratified squamous epithelium
Stratified squamous epithelium protects these surfaces from abrasion by food.
13
The oesophagus belongs to which major organ system?
RRB RPF Constable
06/03/2025
2025
✓ Answer:CDigestive system
The oesophagus is a muscular food pipe that transports food to the stomach.
14
Which gland secretes the enzyme trypsin?
RRB Technicians Grade-III
27/12/2024 / Shift II
2024
✓ Answer:DPancreas
The pancreas secretes trypsinogen, which is activated to trypsin in the small intestine for protein digestion.
15
In digestion, which option best describes a bolus?
RRB RPF Constable
18/03/2025
2025
✓ Answer:DA mixture of food and saliva formed during chewing
A bolus is the softened mass of chewed food mixed with saliva, ready to be swallowed.
16
Our mouth waters because of saliva when we eat something we like. Which enzyme in saliva breaks down starch into simpler sugars?
RRB Technicians Grade-III
23/12/2024 / Shift III
2024
✓ Answer:CAmylase
Salivary amylase begins starch digestion in the mouth, forming maltose and shorter carbohydrate chains.
17
Two test tubes contain water and rice: A contains boiled rice, while B contains boiled and chewed rice. Iodine solution is added to both. Why does blue colour not appear in test tube B?
RRB Group-D
26/08/2022 / Shift I
2022
✓ Answer:CStarch was digested by salivary amylase
Salivary amylase breaks down starch during chewing. With starch digested, the blue-black starch-iodine colour does not develop. The source diagram is described in the question text.
18
Which enzyme in saliva breaks down the complex molecule starch into simpler sugars?
RRB Group-D
17/09/2022 / Shift I
2022
✓ Answer:BSalivary amylase
Salivary amylase, also called ptyalin, starts starch digestion.
19
Which is NOT a function of bile juice?
RRB Group-D
09/09/2022 / Shift II
2022
✓ Answer:BProviding a protein-digesting enzyme
Bile contains no protein-digesting enzyme. It emulsifies fats and helps provide conditions for intestinal digestion.
20
What is the function of villi in the small intestine?
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