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: Plant: Economic Importance →
- The dry aromatic roots of which of the following crops are used to make mats, curtains and fads etc. ? (1) Mint (2) Vetiver (3) Palmarosa grass (4) Patchouli
- What is the term for the formation of new individuals from vegetative parts in plants?Asked in lower devision clerk 2025
- The practice of gootee in plants is used for the purpose of - (a) Control of insects (b) For vegetative propagation (c) Germination of seeds (d) Weed controlAsked in RO ARO pre 2021 · TSPSC Group 1 Prelims 2022
- Which one of the following is used in preparing a natural mosquito repellent?Asked in UPSC IAS 2021
- Propagation method of vetiver is –Asked in Agri. Officer 2020
- The oil present in Rosa damascena isAsked in Food Safety Officer 2022
- The alkaloid caffeine is present inAsked in UPPCS Prelims 2016
- Liberica excelsa, which was seen in the news, belongs to which species?Asked in WBCS Main Paper 4 2023
- First herbicide produced in the world is :Asked in JPSC CS Prelims 2021
- Bacillus thuringiensis is used as :Asked in UKPSC CS Prelims 2012
- Consider the following statements: 1. Maize can be used for the production of starch. 2. Oil extracted from maize can be a feedstock for biodiesel. 3. Alcoholic beverages can be produced by using maize. Which of the statements given above is/are correct?Asked in UPSC IAS 2014
- Maize can be used for the production of starch: Corn starch is a major product derived from maize and is used in food processing, paper manufacturing, textiles, and adhesives. 2. Oil extracted from maize can be a feedstock for biodiesel: Corn oil is extracted from the germ of the maize kernel and is used as cooking oil and in various industrial applications, including as a potential feedstock for biodiesel production. 3. Alcoholic beverages can be produced by using maize: Maize is fermented to produce ethanol, which is used in alcoholic beverages (like Bourbon whiskey) and as a biofuel. 10. Which of the following leguminous plant is also a petro-plant?Asked in UPPCS Prelims 2010
- Which of the following is/are a petro plant ?Asked in UPPSC Upper Mains 2008
- The plants which are popularly known as "petro crops" are rich in 1. Carbohydrates 2. Hydrocarbons 3. Proteins 4. Lipids Choose your answer from given codes : Codes :Asked in UPPSC Upper Mains 2009
- Which of the following is used as Bio-fuel?Asked in Additional Private Secretary Exam 2017
- Which of the following plants is main source of Biodiesel?Asked in Forest Range Officer Exam 2012
- Which of the following is not a hybrid variety of wheat developed by the Indira Gandhi Krishi Vishwavidyalaya, Raipur ?Asked in CGPSC Prelims Exam 2024
- 'Jaya' and 'Ratna', developed for green revolution in India are the varieties ofAsked in PPSC CS Prelims 2015
- “NABI MG” is -Asked in RPSC RAS Prelims 2021
- "Kuttu" flour is obtained fromAsked in UPPSC Upper Mains 2010
- Rice originated inAsked in UPPSC Upper Mains 2015
- “National Bureau of Plant Genetic Resources is situated atAsked in UPPSC Upper Mains 2013
- Jaya, Padma and Krishna are improved varieties of which of the following cereals?Asked in UPPSC Upper Mains 2006
- Which of the following is the correct order of agricultural practices?Asked in MPPSC CS Prelims 2023
- Which of the following is not a Cereal?Asked in APPSC Draughtman 2008