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.
631
Gastric juice contains:
RRB NTPC (Stage-I)
26/04/2016 / Shift I
2016
✓ Answer:AHCl
The intended answer is hydrochloric acid, the characteristic acid of gastric juice. Gastric fluid also contains dissolved salts, so 'contains' is broader than the intended question.
Enamel consists mainly of hydroxyapatite, a calcium phosphate mineral.
634
By which process does food enter the oesophagus, according to the source options?
RRB NTPC (Stage-I)
05/04/2016 / Shift I
2016
✓ Answer:AIngestion
Source key: A. More precisely, ingestion is taking food into the mouth, while swallowing or deglutition moves it into the oesophagus.
635
What is tooth enamel made of?
RRB Group-D
24/10/2018 / Shift I
2018
✓ Answer:BCalcium phosphate
The principal mineral in enamel is calcium phosphate in the form of hydroxyapatite.
636
Human food digestion begins in _____ and is completed in _____.
RRB NTPC (Stage-I)
13/03/2021 / Shift I
2021
✓ Answer:BMouth; small intestine
Chewing and salivary amylase begin digestion in the mouth, and enzymes complete it in the small intestine.
637
Tooth enamel is made mainly of:
✓ Answer:ACalcium phosphate
Enamel is rich in hydroxyapatite, a calcium phosphate mineral. No exam details are printed for this question in the supplied PDF.
638
Which statement about food is false according to the source?
RRB NTPC (Stage-II)
17/01/2017 / Shift III
2017
✓ Answer:AIt is an abiotic substance
Source key: A. The question uses 'biotic' to mean biologically derived. This terminology is imprecise because food itself need not be living and includes nonliving constituents.
639
Which is the largest stomach compartment in ruminant hoofed animals?
RRB NTPC (Stage-I)
13/03/2021 / Shift II
2021
✓ Answer:ARumen
The rumen is the largest compartment in adult ruminants and houses microbes that ferment plant material.
640
Wave-like contraction and relaxation of the food-pipe walls is called _____ movement.
RRB NTPC (Stage-I)
19/01/2017 / Shift II
2017
✓ Answer:APeristaltic
Peristalsis propels a swallowed bolus through the oesophagus.
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