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Mineral Nutrition Practice Questions - DPP for NEET

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1. Which of the following is a free living aerobic non-
photosynthetic nitrogen-fixer?
(a) Rhizobium (b) Azotobacter
(c) Azospirillum (d) Nostoc
2. Which element is located at the centre of the porphyrin ring
in chlorophyll ?
(a) Manganese (b) Calcium
(c) Magnesium (d) Potassium
3. Which one of the following mineral elements plays an
important role in biological nitrogen fixation ?
(a) Molybdenum (b) Copper
(c) Manganese (d) Zinc
4. Leghaemoglobin helps in
(a) nitrogen fixation
(b) protecting nitrogenase from O
2
(c) destroys bacteria
(d) transport of food in plants
5. ‘Whip-tail’ disease in cauliflower is noted due to deficiency
of
(a) manganese (b) magnesium
(c) molybdenum (d) nitrogen
6. Which of the following is correct set of micronutrient for
plants?
(a) Mg, Si, Fe, Cu, Ca (b) Cu, Fe, Zn, B, Mn
(c) Mg, Fe, Zn, B, Mn (d) Mo, Zn, Cl, Mg, Ca
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