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WorksheetsNitrogen Cycle (Pre-Test)
Total questions: 10
Worksheet time: 5mins
Which is FALSE about nitrogen cycle?
The cycle of nitrogen between hydrosphere and litosphere
The cycle of nitrogen between biotic and abiotic component
Main reservoir pool of nitrogen is atmosphere
Most nitrogen is in the form that cannot be absorbed directly by plant
Which of these bacteria involves in biological fixation of nitrogen?
Rhizobium sp.
Nitrosomonas sp.
Pseudomonas sp.
Nitrobacter sp.
In which forms do animal gain nitrogen?
Triglyceride
Starch
Protein
Carbohydrates
Which group of bacteria use nitrogen gas from the air to produce their own nitrate?
Nitrifying bacteria
Denitrifying bacteria
Decomposers
Nitrogen-fixing bacteria
Which is TRUE about industrial fixation of nitrogen?
To form ammonia nitrate
Ammonia is combined with phosphorus to form fertilizer
Involves Haber process
Combination of hydrogen gas and nitrogen gas forming ammonium
In which form plant taken up nitrogen?
Ammonia from the soil
Nitrite ion from the soil
Nitrate ion from the soil
Nitrogen gas from the air
Choose the process with for the definition below:
"Conversion of complex nitrogen into ammonia and ammonium ion"
Denitrification
Assimilation
Ammonification
Nitrification
Choose the process with for the definition below:
"Reduction of nitrate ion to nitrogen gas"
Denitrification
Assimilation
Ammonification
Nitrification
Choose the process with for the definition below:
"Conversion of ammonia or ammonium ion to nitrate ion"
Denitrification
Assimilation
Ammonification
Nitrification
Choose the process with for the definition below:
"Animals uptake nitrogen by eating plant"
Denitrification
Assimilation
Ammonification
Nitrification
