Question 2
Why is purification of water and nutrient salts so important in studies involving mineral nutrition using hydroponics?
Question 3
Explain with examples: macronutrients, micronutrients, beneficial nutrients, toxic elements and essential elements.
Question 5
If a plant shows a symptom which could develop due to deficiency of more than one nutrient, how would you find out experimentally, the real deficient mineral element?
Question 6
Why is that in certain plants deficiency symptoms appear first in younger parts of the plant while in others they do so in mature organs?
Question 8
What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in N2 -fixation?
Question 10
Which of the following statements are true? If false, correct them:
(a) Boron deficiency leads to stout axis.
(b) Every mineral element that is present in a cell is needed by the cell.
(c) Nitrogen as a nutrient element, is highly immobile in the plants.
(d) It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities.
