#1. In plants, boron is required for
#2. Micronutrients are needed only in very small amounts of
#3. Which of the following sets have only micronutrients?
#4. The technique of growing plants in a defined nutrient solution without soil is known as
#5. Select the mismatching pair regarding elements that activate enzymes
#6. The best-defined function of manganese is in the
#7. During cell division, calcium is used in the synthesis of cell wall, particularly as
#8. The main elements essential for determining the solute concentration and the anion-cation balance in cells are
#9. Mineral salts absorbed from soil are translocated through
#10. Sulphur containing amino acids are
#11. Regarding the process of absorption of elements, which statement is true?
#12. In plants, nitrogen is absorbed mainly as
#13. The element needed for activation of carboxylases and in the synthesis of auxin is
#14. Select the false statement
#15. The process of conversion of atmospheric nitrogen (N2 or N≡N) to ammonia is called
#16. The loss of chlorophyll leading to yellowing in leaves is
#17. Main symptom of manganese toxicity is the
#18. Deficiency symptoms of nitrogen, potassium and magnesium are visible first in the
#19. Of the following statements given, which one is the criterion for essentiality of an element?
#20. Decomposition of organic nitrogen of dead plants and animals into ammonia is called
#21. Which of the following sets have only macronutrients?
#22. Nitrogen is the constituents of
#23. Symptoms of Mn toxicity in plants may actually be the
#24. Molybdenum is a component of many enzymes such as
#25. Any mineral ion concentration in tissues that reduces the dry weight of tissues by about …… is considered toxic.
#26. Necrosis (death of tissue) is due to the deficiency of
#27. What is true about potassium?
#28. Regarding hydroponics, which statement is wrong?
#29. Which statement is not true regarding magnesium?
#30. How many elements are absolutely essential for plant growth and metabolism?
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