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Nitrogen Fixation and Photosynthesis

Nitrogen Fixation and Photosynthesis
A major plant macronutrient found in nucleic acids and proteins is

iron
calcium
sulphur
nitrogen

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

nitrogen
none of these
urea
ammonia

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Nitrogen Fixation and Photosynthesis
What is the metal ligand in chlorophylls?

Manganese (Mn)
Iron (Fe)
Copper (Cu)
Magnesium (Mg)

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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

bacteria
yeasts
roundworms
moulds

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Nitrogen Fixation and Photosynthesis
An organism that relies exclusively on pre-synthesized food molecules is

prokaryotic
autotrophic
photosynthetic
heterotrophic

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