Multiple Choice QuestionsIn 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
C.
Golden rice
Golden rice is a variety of Oryza sativa (rice) produced through genetic engineering to biosynthesize Beta-acetone, a precursor of vitamin-A in the edible part of rice (i.e., endosperm). The research that led golden rice was conducted with the goal of helping children who suffer from vitamin-A deficiency. Because many children in countries where there is a dietary deficiency in vitamin-A rely on rice as a staple food, the genetic modification of rice to produce the vitamin-A precursor beta-carotene is seen as a simple and less expensive alternative to vitamin supplements.
Minerals 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
Which one of the following elements in plants is not remboilised?
Calcium
Potassium
Sulphur
Sulphur
Which one of the following is not an essential mineral elements for plants while the remaining three are?
Iron
Manganes
Cadmium
Cadmium
An element playing important role in nitrogen fixation is
Molybdenum
copper
manganese
manganese
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