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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. Local and systemic, both infection found in plant diseaseAsked in Agri. Officer 2020
  2. Concentric ring or target board symptoms found in disease caused byAsked in Agri. Officer 2020
  3. Muriform or dictyospore conidia are found inAsked in Agri. Officer 2020
  4. The fungi included in order peronosporales cause the disease known asAsked in Agri. Officer 2020
  5. Buck eye rot disease of tomato is caused byAsked in Food Safety Officer 2022
  6. Pink boll worm is a pest of :Asked in Regional Inspector (Technical) Exam 2022
  7. Tungo Virus of rice is transmitted byAsked in UPPSC Upper Mains 2009
  8. Read the following regarding the plant diseases caused by bacteria/virus : Name of Plant Name of Disease (i) Rice Ring rot (ii) Plum Tikka (iii) Maize Citrus canker (iv) Banana Bunchy top Select the correct answer :Asked in Assistant Auditor (Direct) 2021
  9. Khaira disease in rice is caused due to the deficiency ofAsked in KPSC KAS Prelims 2015
  10. In some trees, copper deficiency may cause blisters and deep slits in the bark from which exudes gum. This disease is known asAsked in MPSC CS Prelims 2018
  11. Black heart is a common physiological disorder of which vegetable?Asked in Agri. Officer 2020
  12. Loose smut of wheat can be controlled byAsked in Agri. Officer 2020
  13. Use of resistant varieties in IPM is an example ofAsked in Agri. Officer 2020
  14. List of some cloned plants disease resistance genes is given : A. Ptu B. L6 C. Cf D. Hm1 Which of these is not for tomato ?Asked in Food Safety Officer 2022 · CGPSC Prelims Exam 2018
  15. The organism which is used for gene transfer in higher organism is __________.Asked in GPSC Prelims CSP 2 2024
  16. Plant genes of endangered species are stored in :Asked in HPPSC HPAS Prelims 2011
  17. The hybrid variety of mango developed from the cross of Neelam and Alphonso isAsked in MPPSC CS Prelims 2020
  18. Name the transgenic crop in which three genes for synthesis of vitamin A are introduced through the technique of genetic engineering.Asked in MPSC CS Prelims 2019
  19. Bt Cotton is a genetically modified crop with a foreign gene fromAsked in UPSC Geoscientist 2023
  20. Golden rice is a genetically-modified crop plant where the incorporated gene is meant for biosynthesis ofAsked in UPSC NDA 2 2017 · TNPSC CS Prelims 2019
  21. Golden rice isAsked in RPSC RAS Prelims 2013
  22. Consider the following statements and choose the correct ones using the codes given below :Asked in RPSC RAS Prelims 2016
  23. The fourth generation biofuels are obtained from genetically modified :Asked in RPSC RAS Prelims 2024
  24. Match the following: (a) Polyethyleneglycol 1. Herbicide (b) Bt Toxin 2. Stress Tolerance (c) Glyphosate 3. Insecticide (d) Proline 4. Cell FusionAsked in TNPSC CS Prelims 2022
  25. GM (Genetically modified) potatoes developed by British scientists is resistant to which disease?Asked in TNPSC CS Prelims 2014