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.

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1. Angora wool is obtained from a breed ofAsked in UPPSC Upper Mains 2010
2. Conservation and development of which the following breeds of animals is being done through embryo transplantation ? (i) Red Sindhi breed of animals (ii) Sahiwal breed of animals (iii) Gir breed of animalsAsked in Lower Subordinate Services Examination 2024
3. In the colony of honeybees, worker are :Asked in Junior Accountant and TRA 2013
4. Ǔनम्नͧलͨखत में से कौन सा शहद की पͪत्तयों का उपयोग में लाता है ?Asked in JUNIOR ACCOUNTANT AND TRA 2013
5. Which of the following gas is commonly used in Cryo-Bank for ex-situ conservation ?Asked in UPPSC Upper Mains 2009
6. Which one among the following group of organisms produces their own food ?Asked in UPSC Geoscientist 2024
7. Which of the following statements is/are correct with reference to blue waves? 1. It is a rare natural phenomenon also referred to as bio-luminescence. 2. It is caused by the light emitted by fluorescent corals present in ocean.Asked in GPSC Prelims CSP 2 2019
8. Which of the following statements are correct regarding Food Irradiation?Asked in GPSC Prelims CSP 2 2021
9. Which of the following statements are correct? 1. Bacteria can live in almost every conceivable environment, including in or on the human body 2. Viruses are parasitic. That means they require living cells or tissue to grow. 3. Viral infections are contagious, whereas bacterial infections are not contagious.Asked in GPSC Prelims CSP 2 2021
10. Which of the following is/are the types of positive interaction in a biotic community? 1. Colonisation 2. Competition 3. ProtocooperationAsked in GPSC Prelims CSP 2 2022
11. Which part of the world has a high density of organisms ?Asked in HPPSC HPAS Prelims 2010
12. Ultimate source of energy for living being is :Asked in HPPSC HPAS Prelims 2013
13. जीवों के ͧलए ऊजार्त का मूलभूत स्रोत क्या है ?Asked in HPPSC HPAS Prelims 2013
14. The only snake that builds a nest is :Asked in HPPSC HPAS Prelims 2014
15. Which is the only snake that makes a nest?Asked in HPPSC HPAS Prelims 2014
16. Bacteria can be seen by :Asked in UPPCS Prelims 1995
17. Which of the following statements about Bacteria is correct :Asked in UPPCS Prelims 1995
18. MRI is a diagnostic tool, which meansAsked in UPPSC Upper Mains 2008
19. The bear commonly performing on streets isAsked in UPPSC Upper Mains 2008
20. Which one of the following varieties of dogs is unable to bark ?Asked in UPPSC Upper Mains 2010
21. Which one of the following is the longest flower in the world ?Asked in UPPSC Upper Mains 2010
22. An organism involved in the fermentation of toddy is:Asked in UPPSC Upper Mains 2010
23. Who invented the process of canning?Asked in Food Safety Officer 2022
24. Which of the following reactions cause browning on cut surfaces of fruits and vegetables? A. Microbial action B. Enzymatic action C. Chemical reaction D. Excessive heating Select the correct answer using codes given below:Asked in Food Safety Officer 2022
25. Statement 1. Thermal death time is the time required to reduce the number of micro-organisms by the factor of 10 in a thermal process. Statement 2. Thermal death time is also called "D" Value. Statement 3. Thermal death time is also called decimal reduction time. Select the correct answer using the code given below:Asked in Food Safety Officer 2022