Nitrogen cycle
Quiz by Theuns Swanepoel
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10 questions
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- Q1Which process in the nitrogen cycle converts nitrogen gas into ammonia?DenitrificationNitrificationNitrogen fixationAmmonification30s
- Q2What is the final step in the nitrogen cycle?NitrificationNitrogen fixationAmmonificationDenitrification30s
- Q3What is the role of plants in the nitrogen cycle?Plants take up nitrogen from the soil and incorporate it into their tissuesPlants convert nitrogen gas into ammoniaPlants release nitrogen gas into the atmospherePlants break down organic nitrogen compounds into ammonia30s
- Q4Which process removes carbon dioxide from the atmosphere?EvaporationPhotosynthesisErosionCombustion30s
- Q5Which process returns carbon dioxide to the atmosphere?RespirationPhotosynthesisWeatheringCondensation30s
- Q6What is carbon sequestration?The process of converting carbon dioxide into oxygen.The process of capturing and storing carbon dioxide from the atmosphere.The process of releasing carbon dioxide into the atmosphere.The process of removing carbon from the soil.30s
- Q7What is eutrophication?The contamination of water with harmful chemicals.The destruction of aquatic habitats due to pollution.The depletion of oxygen in a body of water.The excessive growth of algae and other aquatic plants due to an increased concentration of nutrients in the water.30s
- Q8Which of the following is true about nitrogen-fixing bacteria?They are harmful to plantsThey convert atmospheric nitrogen into usable forms for plantsThey only live in aquatic environmentsThey require sunlight to function30s
- Q9Which of the following is a mutualistic relationship involving nitrogen-fixing bacteria?Bacteria causing diseases in plantsBacteria living in the root nodules of legume plantsBacteria inhibiting plant growthBacteria competing with plants for nutrients30s
- Q10Which of the following is a natural fertilizer?PesticideCompostFungicideHerbicide30s