#1. Which is essential for the growth of root tip?
#2. The major portion of the dry weight of plants comprises of
#3. Identify a micronutrient for plants amongst the following:
#4. Which one of the following is a micronutrient for plants?
#5. Which one of the following produces nitrogen fixing nodules on the roots of Alnus?
#6. Minerals known to be required in large amounts for plant growth include:
#7. Which of the following elements is responsible for maintaining turgor in cells?
#8. Which one gives the most valid and recent explanation for stomatal movements?
#9. A pair of insectivorous plants is
#10. The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport:
#11. A thiobacillus is a group of bacteria helpful in carrying out
#12. Which one oft he following is not an essential element for plants ?
#13. A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is
#14. Which aquatic fern performs nitrogen fixation?
#15. Deficiency symptoms of nitrogen and potassium are visible first in:
#16. Enzyme involved in nitrogen assimilation
#17. In which of the following forms is iron absorbed by plants?
#18. The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plant is / are.
#19. The major role of minor elements inside living organisms is to act as
#20. Boron in green plants assists in
#21. Mycorrhiza is a symbiotic relationship between roots of higher plants and
#22. Grey spots of oat are caused by deficiency of
#23. Which of the following can fix atmospheric nitrogen?
#24. Which ofthe following is a free living aerobic nonphotosynthetic nitrogen-fixer?
#25. Which one of the following mineral elements plays an important role in biological nitrogen fixation ?
#26. Passive absorption of minerals depend on
#27. Which of the following bacteria reduce nitrate in soil into nitrogen?
#28. In which of the following all three are macronutrients?
#29. Which ofthe following is not caused by deficiency of mineral nutrition?
#30. A plant requires magnesium for
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