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NCERT solutions Biology Textbook for Class 11 chapter 12 Mineral Nutrition

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Chapter 12 - Mineral Nutrition

Pages 193 - 205

All elements that are present in a plant need not be essential to its survival’. Comment.

Q 1 | Page 205 | view solution

Why is purification of water and nutrient salts so important in studies involving mineral nutrition using hydroponics?

Q 2 | Page 205 | view solution

Explain essential elements with examples.

Q 3 | Page 205 | view solution

Explain macronutrients with examples

Q 3.1 | Page 205 | view solution

Explain micronutrients with examples

Q 3.2 | Page 193 | view solution

Explain beneficial nutrients with example

Q 3.3 | Page 205 | view solution

Explain toxic elements with examples

Q 3.4 | Page 205 | view solution

Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.

Q 4 | Page 205 | view solution

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?

Q 5 | Page 205 | view solution

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?

Q 6 | Page 205 | view solution

How are the minerals absorbed by the plants?

Q 7 | Page 205 | view solution

What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in N2 -fixation?

Q 8 | Page 205 | view solution

What are the steps involved in formation of a root nodule?

Q 9 | Page 205 | view solution

following statement are true? If false, correct them: Boron deficiency leads to stout axis.

Q 10.1 | Page 205 | view solution

Given statement are true? If false, correct them - Every mineral element that is present in a cell is needed by the cell.

Q 10.2 | Page 205 | view solution

Given statement are true? If false, correct them: - Nitrogen as a nutrient element, is highly immobile in the plants.

Q 10.3 | Page 205 | view solution

Given statement are true? If false, correct them: -  It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities.

Q 10.4 | Page 205 | view solution

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