Biology Previous Year Questions 2026 | UPPSC RO/ARO

Biology - MOST IMPORTANT UPPSC RO/ARO Previous Year Questions

Practice real questions from previous year exams of UPPSC RO/ARO.

📘 Micro-Nutrients: Vitamins- Sources and Deficiency Diseases📚 Misc
Q1
Match List-I with List-II and choose the correct answer using the code given below: List-I (Vitamin) A. Vitamin-C B. Folic Acid C. Vitamin-A D. Vitamin-B1 List-II (Deficiency Disease) 1. Night blindness 2. Beri-Beri 3. Anemia 4. Scurvy
🎯 UPPSC RO/ARO (Pre) Nirsat Exam-2023
📘 Diseases caused by excess/deficiency of elements📚 Minamata
Q2
The cause of 'Minamata' disease is -
🎯 UPPSC RO/ARO (Pre) Nirsat Exam-2023
📘 Excretory System-II: Human Excretory System📚 Misc
Q3
Kidney stones are formed due to -
🎯 UPPSC RO/ARO (Pre) Nirsat Exam-2023
📘 Digestive System- I📚 Nutrition - General Facts
Q4
Which one of the following groups of diet provides maximum energy to human body?
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Botany- Plant Classification- Phanerogams📚 Misc
Q5
Which one of the following is a bio-diesel plant?
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Micro-Nutrients: Vitamins- Sources and Deficiency Diseases📚 Misc
Q6
Which vitamin is soluble in water?
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Botany- types of Hormones📚 Growth Promoter- Auxin, Gibberellin, Cytokinin
Q7
Which one of the following is a plant hormone?
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Morphology📚 Misc
Q8
Plants accepts nitrogen in which form?
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Monera- Bacteria📚 General Facts
Q9
Antibiotics are mostly obtained from-
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Morphology📚 Stem and its types- Underground, Aerial, Subaerial, etc.
Q10
Turmeric is an example of underground stem, known as-
🎯 UPPSC RO/ARO (Mains) Exam-2021
📘 Medicinal Plants📚 Medicinal Plants and related Diseases
Q11
Tulsi plant has medicinal values due to the presence of the following-
🎯 UPPSC RO/ARO (Pre) Exam-2021 (Ex. Dt. 14.12.2021)
📘 Evolution📚 General Facts
Q12
Which of the following is considered a 'Hotspot' of biodiversity in India?
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 General Miscellaneous📚 Miscellaneous
Q13
The chief source of Hydrogen Sulphide pollutant is-
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 Morphology📚 Seed
Q14
Niger crops is a oil seed crop. What is the content of oil in its seeds?
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 General Miscellaneous📚 Miscellaneous
Q15
Which of the following is correct sequence of ecosystem in order of decreasing productivity?
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 General Miscellaneous📚 Miscellaneous
Q16
Which of the following pairs in not correctly matched? (Crops) - (Country)
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 General Miscellaneous📚 Miscellaneous
Q17
Water Pollution of river is measured by-
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 Macro-Nutrients: Protein📚 Proteins in Food and Other Biological Sources
Q18
Which of the following Eatables is the best source of all the essential amino acids?
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 Classification of Kingdom📚 Phylum Arthropoda
Q19
The Silk produced by spiders is called-
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)
📘 Reproduction in Organisms- II (Asexual Reproduction)📚 Vegetative Propagation- by Stems
Q20
The practice of gootee in plants is used for the purpose of-
🎯 UPPSC RO/ARO (Pre) Exam 2021 (Ex. Dt. 14.12.2021)