NCERT Solutions for Class 11 Biology Chapter 12 - Mineral Nutrition


NCERT Solutions for Class 11 Biology Chapter 12 - Mineral Nutrition: This chapter mainly focuses on inorganic plant nutrition, wherein you will study the methods to identify elements essential to growth and development of plants and the criteria for establishing the essentiality. You will also study the role of the essential elements, their major deficiency symptoms and the mechanism of absorption of these essential elements. The chapter introduces you briefly to the significance and the mechanism of biological nitrogen fixation. Plants obtain their inorganic nutrients from the air, water, and soil. Plants absorb a wide variety of mineral elements. Not all the mineral elements that they absorb are required by plants. Out of the more than 105 elements discovered so far, less than 21 are essential and beneficial for normal plant growth and development.

Here are the important topics of NCERT Class 11 Biology Chapter 12 - Mineral Nutrition given below:

12.1 Methods to Study the Mineral Requirements of Plants

    12.2.1 Criteria for Essentiality

    12.2.2 Role of Macro- and Micro-nutrients

    12.2.3 Deficiency Symptoms of Essential Elements

    12.2.4 Toxicity of Micronutrients

12.2 Essential Mineral Elements

12.3 Mechanism of Absorption of Elements

12.4 Translocation of Solutes

12.5 Soil as Reservoir of Essential Elements

12.6 Metabolism of Nitrogen

    12.6.1 Nitrogen Cycle

    12.6.2 Biological Nitrogen Fixation

In Chapter 12 - Mineral Nutrition, you will study that nitrogen is very essential for the sustenance of life. Plants cannot use atmospheric nitrogen directly. But some of the plants in association with N 2 -fixing bacteria, especially roots of legumes, can fix this atmospheric nitrogen into biologically usable forms. Nitrogen fixation requires a strong reducing agent and energy in the form of ATP. N_2 -fixation is accomplished with the help of nitrogen-fixing microbes, mainly Rhizobium. The enzyme nitrogenase which plays an important role in biological N_2 fixation is very sensitive to oxygen. Most of the processes take place in the anaerobic environment.

After going through NCERT Class 11 Biology Chapter 12 - Mineral Nutrition, you must be able to answer the questions which are given below:

  • Q1. 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?
  • Q2. 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?
  • Q3. How are the minerals absorbed by the plants?

You may face any query in answering these questions then don't worry, NCERT Solutions for Class 11 Biology Chapter 12 - Mineral Nutrition will help you in answering these questions by understanding the concept on which they are based.

Solutions for NCERT Class 11 Biology Chapter 12 - Mineral Nutrition will also help you in the preparation of other competitive exams like NEET and AIIMs along with your school exams.

NCERT Solutions for Class 11 Biology Chapter 12 Mineral Nutrition- Solved Exercise Questions

NCERT Solutions for class 11 Biology


The Living World


Biological Classification


Plant Kingdom

Chapter- 4

Animal Kingdom


Morphology of Flowering Plants


Anatomy of Flowering Plants


Structural Organisation in Animals


Cell: The Unit of Life




Cell Cycle and Cell Division


Transport in Plants


Photosynthesis in Higher Plants


Respiration in Plants


Plant Growth and Development


Digestion and Absorption


Breathing and Exchange of Gases


Body Fluids and Circulation


Excretory Products and their Elimination


Locomotion and Movement


Neural Control and Coordination


Chemical Coordination and Integration

NCERT Solutions for Class 11- Subject wise

NCERT solutions for Class 11 Biology

NCERT solutions for Class 11 Maths

NCERT solutions for Class 11 Chemistry

NCERT solutions for Class 11 Physics


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