CBSE - Class 11 Biology Mineral Nutrition Worksheet
1.
‘All elements that are present in a plant need not be essential to its survival’. Comment.
2.
What are the steps involved in formation of a root nodule?
3.
Why is purification of water and nutrient salts so important in studies involving mineral nutrition using hydroponics?
4.
What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in $N_2$-fixation?
5.
Explain with examples: macronutrients, micronutrients, beneficial nutrients, toxic elements and essential elements.
6.
How are the minerals absorbed by the plants?
7.
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?
8.
Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.
9.
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?
10.
Which of the following statements are true? If false, correct them: (d) It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities.
11.
Which of the following statements are true? If false, correct them: (c) Nitrogen as a nutrient element, is highly immobile in the plants.
12.
Which of the following statements are true? If false, correct them: (b) Every mineral element that is present in a cell is needed by the cell.
13.
Which of the following statements are true? If false, correct them: (a) Boron deficiency leads to stout axis.
