#1. The function of leghaemoglobin in the root nodules of legumes is_______
#2. Leghemoglobin________
#3. Most abundant element present in plants is___________
#4. In which of the following all three are macronutrients?
#5. An element playing important role in nitrogen fixation is_________
#6. For its activity, nitrogenase requires________
#7. Sulphur is an important nutrient for optimum growth and productivity in__________
#8. During biological nitrogen fixation, inactivation nitrogenase by oxygen poisoning is prevented by_____
#9. Which is essential for the growth of root tip
#10. The first stable product of fixation of atmospheric nitrogen in leguminous plants is________
#11. Internal cork of apple is caused due to deficiency of________
#12. Which one of the following is not an essential minerals element for plants while the remaining three are?
#13. In root nodules of legumes, leghaemoglobin is important because_________
#14. Plant requires magnesium for_________
#15. In which of the following forms is iron absorbed by plants?
#16. About 98 per cent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and_______
#17. Molybdenum is essentially involved in plants metabolism in________
#18. Which of the following elements is a component of the middle lamella in plant cells?
#19. Minerals known to be required in large amounts for plant growth include________
#20. Which one of the following is the incorrect statement?
#21. Which of the following is not a micronutrient___________
#22. Which of the following elements in plants is not immobilized?
#23. Deficiency symptom of nitrogen and potassium are visible first in_______
#24. The role of minerals in plant growth and metabolism was discovered by________
#25. The common nitrogen fixers in paddy fields is
#26. Which of the following is not caused by detficiency or mineral nutrition ?
#27. Mineral transport in plants_______
#28. Which of the following element is responsible for maintaining turgor in cells________
#29. Which one of the following elements is not an essential micronutrient for plant growth?
#30. Which one of the following elements is required for photosynthetic oxygen evolution?
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