Biology : Mineral Nutrition

What are the steps involved in formation of root nodule

In which of the following, all three are macronutrients

• Iron, copper, molybdenum

• Molybdenum, magnesium, manganese

• Nitrogen, nickel, phosphorous

• Nitrogen, nickel, phosphorous

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

• NO₂^-

• ammonia

• NO₃^-

• NO₃^-

During biological nitrogen fixation inactivation of nitrogenase by oxygen poisoning is prevented by

• Leghaemogolobin

• Xanthophyll

• Carotene

• Carotene

Best defined function of manganese in green plants is

• Photolysis of water

• Calvin cycle

• Nitrogen fixation

• Nitrogen fixation

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘A’ deficiency?

• ‘Flaver Savr’ tomato

• Canolla

• Golden rice

• Golden rice