Mineral Nutrition PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Mineral Nutrition · Set 1 (Q1-23)
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1. $The free-living, anaerobic nitrogen-fixer is$ (1) $Beijerinckia$ (2) $Rhodospirillum$ (3) $Rhizobium$ (4) $Azotobacter$ 2. $The best defined function of Manganese in green plants is$ (1) $Photolysis of water$ (2) $Calvin cycle$ (3) $Nitrogen fixation$ (4) $Water absorption$ 3. $The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?$ (1) $Manganese and Potassium$ (2) $Magnesium and Molybdenum$ (3) $Magnesium and Chlorine$ (4) $Manganese and Chlorine$ 4. $Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. which one of the following statements is not correct during this process of nitrogen fixation?$ (1) $Leghaemoglobin scavenges oxygen and it is pinkish in colour.$ (2) $Nodules act as sites for nitrogen fixation.$ (3) $The enzyme nitrogen catalyses the conversion of atmospheric N_{2} to N H_{3} .$ (4) $Nitrogenase is insensitive to oxygen.$ 5. $During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by:$ (1) $Xanthophyll$ (2) $Carotene$ (3) $Cytochrome$ (4) $Leghaemoglobin$ 6. $The genetically-modified (GM) brinjal in India has been developed for$ (1) $Insect-resistance$ (2) $Enhancing Shelf life$ (3) $Enhancing mineral content$ (4) $Drought-resistance$ 7. $Which one of the following is not an essential mineral element for plants while the remaining three are?$ (1) $Iron$ (2) $Manganese$ (3) $Cadmium$ (4) $Phosphorus$ 8. $Which one of the following is a wrong statement?$ (1) $Anabaena and Nostoc are capable of fixing nitrogen in free-living state also.$ (2) $Root nodule forming nitrogen fixers live as aerobes under free-living conditions.$ (3) $Phosphorus is a constituent of all membranes, certain nucleic acids and all proteins.$ (4) $Nitrosomonas and Nitrobacter are chemoautotrophs.$ 9. $Mineral known to be required in large amounts for plant growth include:$ (1) $Phosphorus, potassium, sulphur, calcium$ (2) $Calcium, magnesium, manganese, copper$ (3) $Potassium, phosphorus, selenium, boron$ (4) $Magnesium, sulphur, iron, zinc$ 10. $Which one gives the most valid and recent explanation for stomatal movements?$ (1) $Transpiration$ (2) $Potassium influx and efflux$ (3) $Starch hydrolysis$ (4) $Guard cell photosynthesis$ 11. $The first stable product of fixation of atmospheric nitrogen in leguminous plants is$ (1) $NO_{2}^{-}$ (2) $Ammonia$ (3) $NO_{3}^{-}$ (4) $Glutamate$ 12. $Deficiency symptoms of nitrogen and potassium are visible first in$ (1) $Senescent leaves$ (2) $Young leaves$ (3) $Roots$ (4) $Buds$ 13. $Which is essential for the growth of root tip?$ (1) $Fe$ (2) $Ca$ (3) $Mn$ (4) $Zn$ 14. $Which one of the following is not a micronutrient?$ (1) $Molybdenum$ (2) $Magnesium$ (3) $Zinc$ (4) $Boron$ 15. $The most abundant intracellular cation is$ (1) $N a^{+}$ (2) $c a^{+}$ (3) $H^{+}$ (4) $K^{+}$ 16. $Which one of the following elements in plants is not remobilized?$ (1) $Calcium$ (2) $Potassium$ (3) $Sulphur$ (4) $Phosphorus$ 17. $An element playing important role in nitrogen fixation is$ (1) $Molybdenum$ (2) $Copper$ (3) $Manganese$ (4) $Zinc$ 18. $In which of the following all three are macronutrients?$ (1) $Boron, zinc, manganese$ (2) $Nitrogen, potassium, phosphorus$ (3) $Molybdenum, magnesium, manganese$ (4) $Iron, copper, molybdenum$ 19. $For its activity, carboxypeptidases requires$ (1) $Iron$ (2) $Niacin$ (3) $Copper$ (4) $Zinc$ 20. $Study the cycle shown below and select the option which gives the correct word for all the four blanks A, B, C and D.$ (1) $A: Nitrification, B: Ammonification, C: Animals, D: Plants$ (2) $A: Denitrification, B: Ammonification, C: Plants, D: Animals$ (3) $A: Nitrification, B: Denitrification, C: Animals, D: Plants$ (4) $A: Denitrification, B: Nitrification, C: Plants, D: Animals$ 21. $For its action, nitrogenase requires$ (1) $Light$ (2) $Mn2+$ (3) $Super oxygen radicals$ (4) $High input of energy$ 22. $Nitrifying bacteria$ (1) $Convert free nitrogen to nitrogen compounds$ (2) $Convert proteins into ammonia$ (3) $Reduce nitrates to free nitrogen$ (4) $Oxidize ammonia to nitrates$ 23. $Read the following four statements (A to D): (A) Both, photophosphorylation and oxidative phosphorylation involves the uphill transport of protons across the membrane. (B) In dicot stems, a new cambium originates from the cells of pericycle at the time of secondary growth. (C) Stamens in flowers of Gloriosa and Petunia are polyandrous. (D) Symbiotic nitrogen-fixers occur in free-living state also in soil. How many of the above statements are right?$ (1) $Three$ (2) $Four$ (3) $One$ (4) $Two$