Nitrogen Cycle Quiz

Froggy Jumps

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Test your knowledge of nitrogen cycling

Bryce Martin

United States

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Nitrogen Cycle Quiz


Froggy Jumps Nitrogen Cycle QuizVersion en ligne Test your knowledge of nitrogen cycling par Bryce Martin 1 What process converts atmospheric N2 into bioavailable forms in legume roots? a Nitrification b Nitrogen fixation c Denitrification 2 Which organism is key for nitrogen fixation in root nodules? a Nitrosomonas bacteria b Rhizobium bacteria c Nitrobacter bacteria 3 What is the first step of nitrification in soil? a Ammonia (NH3) to nitrite (NO2-) b Nitrate to nitrogen gas c Ammonium to nitrate 4 Which molecule is the primary inorganic form taken up by plants? a Ammonia (NH3) b Nitrite (NO2-) c Nitrate (NO3-) 5 Which process releases nitrogen back to the atmosphere as N2? a Nitrification b Ammonification c Denitrification 6 What mineralization step converts organic N to ammonium? a Ammonification b Dentirification c Assimilation 7 Which two bacteria drive nitrification in soil? a Nitrosomonas and Nitrobacter b Azotobacter and Pseudomonas c Rhizobium and Clostridium 8 What happens during plant assimilation of nitrogen? a Plants perform denitrification b Plants release N2 gas c Plants take up NO3- or NH4+ for growth 9 Which process reduces nitrate to nitrogen gas under anaerobic conditions? a Assimilation b Nitrification c Denitrification 10 Which nitrogen form is most abundant in the atmosphere? a NO3- b N2 c NH4+