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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
Plants absorb nitrates from soil and convert them into

none of these
ammonia
urea
nitrogen

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Nitrogen Fixation and Photosynthesis
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2?

Ribose-5-phosphate
Ribulose-l,5-diphosphate
Alpha-ketoglutarate
Erythrose-4-phosphate

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Nitrogen Fixation and Photosynthesis
Which of the following molecule is produced from the fixation of CO2 in C4 plants?

Pyruvate
Oxaloacetate
Malate
Alpha-ketoglutarate

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Nitrogen Fixation and Photosynthesis
In the presence of carbon monoxide, nitrogen fixation

inhibits
increases
decreases
none of these

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Nitrogen Fixation and Photosynthesis
The chief source of nitrogen for green plants is

atmospheric nitrogen
low molecular weight- organic nitrogenous compound
ammonium salts
nitrates

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Nitrogen Fixation and Photosynthesis
Organisms capable of converting N2 to NO3 are

moulds
bacteria
yeasts
roundworms

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