Biology
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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.

Read the notes: Main Plant Diseases →

  1. Which one of the following statements is not correct about “Flavr Savr” tomatoes ?Asked in UPSC CAPF 2009
  2. Which one among the following statements correctly defines the term Bio-fortification ?Asked in UPSC CAPF 2014
  3. Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to 1. resist drought and increase absorptive area 2. tolerate extremes of pH 3. resist disease infestation Select the correct answer using the codes given below:Asked in UPSC IAS 2013
  4. With reference to the Genetically Modified mustard (GM mustard) developed in India, consider the following statements : 1. GM mustard has the genes of a soil bacterium that give the plant the property of pest-resistance to a wide variety of pests. 2. GM mustard has the genes that allow the plant cross-pollination and hybridization. 3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University. Which of the statements given above is/are correct?Asked in UPSC IAS 2018
  5. RNA interference (RNAi)' technology has gained popularity in the last few years. Why?Asked in UPSC IAS 2019
  6. Bollgard I and Bollgard II technologies are mentioned in the context ofAsked in UPSC IAS 2021
  7. Phytophthora palmivora is aAsked in WBPSC CS Prelims 2022
  8. The first transgenic crop wasAsked in WBPSC CS Prelims 2022
  9. The micro-organism which is associated with the production of Bt cotton is aAsked in UPPCS Prelims 2010
  10. Shaktiman-I and Shaktiman-II are the genetically modified crops of:Asked in UPPSC Upper Mains 2006
  11. Which of the following wheat varieties has been developed through induced mutation?Asked in UPPSC Upper Mains 2015
  12. Which of the following is a transgenic plant ?Asked in UPPSC Upper Mains 2012
  13. Indian farmers are unhappy over the introduction of “Terminator Seed Technology” because the seeds produced by this technology are expected toAsked in UPPCS Prelims 1999
  14. Statement-I: Insect resistant transgenic cotton has been produced by inserting Bt gene. Statement-II: The Bt gene is derived from a bacterium.Asked in UPPCS Prelims 1999
  15. Insect resistant cotton plants have been genetically engineered by inserting a gene from a/ anAsked in UPPCS Prelims 2000
  16. The American multinational company, Monsanto has produced an insect resistant cotton variety that is undergoing field- trails in India. A toxin gene from which ONE of the following bacteria has been transferred to this transgenic cotton?Asked in UPPCS Prelims 2001
  17. For which desirable character the transgenic Crop "GOLDEN RICE" is produced:Asked in RPSC RAS Prelims 2008
  18. Genetically modified Bt. Brinjal is developed forAsked in MPPSC CS Prelims 2022
  19. The Bt cotton is a transgenic crop with gene transfer fromAsked in WBCS Main Paper 4 2019
  20. A genetically engineered form of brinjal, known as the Bt-brinjal, has been developed, the objective of this isAsked in WBCS Main Paper 4 2019
  21. Most Bt toxins are insect-group-specific. The toxin is coded by a gene, named asAsked in ACF And Forest Range Officer Gr I Comp. Exam 2018
  22. Bio 212 is a somaclonal variety ofAsked in Agri. Officer 2020
  23. What is not true about marker assisted selection?Asked in Agri. Officer 2020
  24. Match List – I with List – II and select the correct answer by using the codes given below the lists : List – I 1. Bollgard 2. Maximen 3. Lauriel 4. New Leaf 5. Flavr savr Codes : (1) E D B C A (2) D E B C A (3) C A B E D (4) A B C D E List – II A. Tomato B. Canola C. Potato D. Maize E. CottonAsked in Agri. Officer 2020
  25. Which of the following statements is not true for genetically modified crops ? Genetic modifications make crops more tolerant to abiotic stresses. Genetic modifications reduce reliance on chemical pesticides. Genetic modifications reduce efficiency of mineral usage. Genetic modifications reduce post harvest losses.Asked in Clerk GR II Comb. Comp. Exam 2013