Biology questions with answers

2,759 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

1. The study of bones is done under the branch of science calledAsked in BPSC Prelims Exam 65th
2. ‘Histology’ is associated with Study of tissues Study of heart diseases Study of finger prints Science of plant kingdomAsked in Assistant Engineer (AE) Exam 2012
3. What is Craniology?Asked in LAW OFFICER CUM JUNIOR DRAFTSMAN 2018
4. Janaki Ammal was the first Indian woman to get a Ph.D. and an honorary D. Sc. from the University of Michigan in which subject ?Asked in HAS Prelims 2019
5. What is 'Bryology'?Asked in HOMOEOPATHIC MEDICAL OFFICER 1 2023
6. ‘फू लों की घाटी’ की खोज ͩकसने की ?Asked in Data Entry Operator 2023
7. Match list-I with list-II and select the correct answer from the code given below the lists – List-I (Name of Scientist) A Birbal Sahni B K.C. Mehta C P. Maheshwari D M.S. Swaminathan List-II (Area of work) 1 Green Revolution 2 Embryology 3 Paleobotany 4 Plant pathology Code - (a) A-1, B-2, C-3, D-4 (b) A-3, B-4, C-2, D-1 (c) A-2, B-1, C-3, D-4 (d) A-4, B-3, C-2, D-1Asked in RO ARO Mains 2021
8. Which one of the following is the correct sequence of passage of light in a compound microscope?Asked in UPSC CDS 1 2019
9. When using centrifuges, the contents of centrifuge tubes must beAsked in JUNIOR laboratory assistant 2025
10. Example of good laboratory ethics isAsked in JUNIOR laboratory assistant 2025
11. While studying vegetation of an area, terms like 'population' and 'community' are often used. Which one of the following statements best describes a population ?Asked in UPSC CDS 2 2021
12. Which of the following constitute a food chain ?Asked in CGPSC Prelims Exam 2016
13. Heterotrophic organisms, chiefly bacteria and fungi that breakdown the complex compounds of dead protoplasm and release simple usable substances for other organisms are :Asked in MPSC CS Prelims 2014
14. Which one of the following is the correct sequence of a food chain?Asked in UPSC IAS 2014
15. Consider the following kinds of organisms : 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains of oceans?Asked in UPSC IAS 2021
16. Which one of the following groups of organisms correctly makes a food chain ?Asked in UPSC CISF AC EXE 2023
17. Necton areAsked in WBPSC CS Prelims 2017
18. In a food chain, man isAsked in UPPCS Prelims 2016
19. Composting of organic matter involvesAsked in APPSC Panchayat secretary Prelims 2016
20. Which form of symbiosis benefits one member of the interaction, but neither benefits nor harms the other member?Asked in WBCS Main Paper 4 2022
21. A population has unlimited resources and exhibits rapid and sustained population growth.Asked in WBCS Main Paper 4 2022
22. Upper part of sea aquatic ecosystem containsAsked in WBCS Main Paper 4 2022
23. The 10% law was provided byAsked in WBCS Main Paper 4 2023
24. Competitive Exclusion Principle was denoted byAsked in WBCS Main Paper 4 2023
25. Increase in concentration of the toxicant at successive trophic levels is known asAsked in ACF And Forest Range Officer Gr I Comp. Exam 2018