CBSE
Multiple Choice QuestionsMinerals known to be required in large amounts for plant growth include
phosphorus, potassium, sulphur, calcium
calcium, magnesium, manganese, copper
potassium, phosphorus, selenium, boron
potassium, phosphorus, selenium, boron
An element playing important role in nitrogen fixation is
Molybdenum
copper
manganese
manganese
During biological nitrogen fixation inactivation of nitrogenase by oxygen poisoning is prevented by
Leghaemogolobin
Xanthophyll
Carotene
Carotene
The first stable product of fixation of atmospheric nitrogen in leguminous plants is
NO2-
ammonia
NO3-
NO3-
For its action, nitrogenase requires
high input of energy
light
Mn2+
Mn2+
Which one of the following is not an essential mineral elements for plants while the remaining three are?
Iron
Manganes
Cadmium
Cadmium
Which one of the following elements in plants is not remboilised?
Calcium
Potassium
Sulphur
Sulphur
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
In which of the following, all three are macronutrients
Iron, copper, molybdenum
Molybdenum, magnesium, manganese
Nitrogen, nickel, phosphorous
Nitrogen, nickel, phosphorous
Best defined function of manganese in green plants is
Photolysis of water
Calvin cycle
Nitrogen fixation
Nitrogen fixation
