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: Biofertilizers →
- Which of the following is used as Biofertilizer ?Asked in CGPSC Prelims Exam 2019 · UPSC CDS 1 2021
- Test cross is the cross of an individual with -Asked in Head Master Praveshika School (Sanskrit Edu.) 2021
- Duckweed or Azolla is used as a/anAsked in UPSC Geoscientist 2023
- What kind of micro-organisms are there in nitrogen fixing bacteria ?Asked in HAS Prelims 2019
- Match List I with List II and select the correct answer using the code given below the lists : List I List II (Plant) (Biofertilizer)Asked in UPSC CAPF 2011
- Rhizobium is aAsked in UPSC CISF AC EXE 2024
- Yeast are used in bakery industry for production of –Asked in Agri. Officer 2020
- Which of the following statements is incorrect for Bio-gas ? (1) It is an excellent fuel as it contains upto 75% methane. (2) It burns with smoke and leaves residue like ash. (3) Its heating capacity is high. (4) Bio-gas is also used as source of light. (5) Question not attemptedAsked in Deputy Jailor 2024
- The micro-organism _______ is responsible for the formation of beer and wine and its fermented end product is ________.Asked in Food Safety Officer 2019
- Which of the following is fermented by Koji ?Asked in Food Safety Officer 2019
- The use of micro-organisms to degrade environmental pollutants is calledAsked in Food Safety Officer 2019
- Microbes that have beneficial effect on health of the consumers are calledAsked in Food Safety Officer 2019
- Nitrate rich foods favour the luxurious growth of one of the following :Asked in Food Safety Officer 2022
- All are rich natural sources of probiotic exceptAsked in Food Safety Officer 2022
- Which substrate is used for the production of Beer ?Asked in Food Safety Officer 2022
- One of the following is a fermented condiment :Asked in Food Safety Officer 2022
- Initial Lactic acid bacteria utilizing sugars of cabbage in sauerkraut fermentation is :Asked in Food Safety Officer 2022
- Which of the following statement is correct ?Asked in Food Safety Officer 2022
- Biofertilizers are :Asked in RO ARO pre 2023
- Biofertilizer is aAsked in STAFF NURSE UNANI 2023
- The fundamental requirements for nitrogen fixation are : (a) Nitrogenase (b) Ferredoxin (c) ATP (d) Aerobic conditionsAsked in MPSC CS Prelims 2014
- Which one of the following is a useful functional association between fungi and the roots of higher plants?Asked in UPPCS Prelims 1999
- Mycorrhiza is associated with which organism?Asked in lower devision clerk 2025
- Azotobacter and Clostridium convertAsked in UPSC Geoscientist 2022
- Azolla is used as a bio-fertilizer as it possesses _______Asked in GPSC Prelims CSP 2 2024