1) Which bacteria convert Nitrogen into nitrates a) denitrifying bacteria b) nitrifying bacteria c) Nitrogen fixing bacteria 2) The plant provides food/glucose for the bacteria for respiration a) True b) False 3) Why do plants needs Nitrates? a) growth & make proteins b) growth & respiration c) respiration 4) Lightning breaks up N2 & O2 forming a) Nitrogen dioxide b) Nitrogen oxide c) carbon dioxide 5) Which bacteria convert Nitrates to Nitrogen gas? a) Nitrifying b) denitrifying c) neither of the above 6) Animals produce their own protein a) True b) False 7) Which relationship means when both organisms benefit? a) commensalism b) mutualism c) parasitism 8) Which type of bacteria live in root nodules? a) nitrogen fixing b) decomposers c) nitrifying 9) Phosphates are needed for root & shoot growth a) True b) False

KS4 Nitrogen cycle quiz

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