NCERT Solutions for Class 11 Biology Chapter 12 - Mineral Nutrition
With CBSE NCERT Solution for Chapter 12 Biology Class 11, one can learn about inorganic plant nutrition and identify elements essential to the growth and development of plants. The topic - Mineral Nutrition Class 11 NCERT Solution Biology (Science) provides solutions to the various questions given in the academic textbook.
Class 11 Biology NCERT Solutions are designed as per CBSE guidelines. These solutions help in the easy and simple understanding of the questions which are present in the book. These solutions help in preparing for school exams and are precise. Download NCERT Solutions for Class 11 Biology Chapter 12 Mineral Nutrition free PDF at Vedantu and keep learning.
FAQs on NCERT Solutions for Class 11 Biology Chapter 12
1. If a Plant Shows a Symptom Which Could Grow Because of Lack of more than one Nutrient, How Would you Find out by Experiment, the Real Deficient Mineral Element?
Deficiency symptoms are first concentrated by methods for pot and culture tests. Quickly developing plants which create trademark indications are utilized in culture tests. They are called test (pointer) plants. They are then filled in soil under test in little pots. The outcomes are contrasted with known insufficiency components. Comparative tests are performed with chosen crops.
2. How are the Minerals Soaked by the Plants?
Plants ingest their mineral salt flexibly from the dirt through the roots from the zones of extension and root hair. The minerals are assimilated as particles which are amassed by the plants against their focus in the dirt. The plant shows two stages in mineral retention – beginning and metabolic. In the underlying stage, there is a quick take-up of particles into the external or free space of the cells (apoplast) that involves intercellular spaces and cell dividers. Particles retained in free space are uninhibitedly interchangeable, for example replacing unlabelled K+ particles with marked K+ particles. In the metabolic stage, the particles pass into internal space involving cytoplasm and vacuole. In the inward space, the particles are not openly interchangeable with those of the outside medium. Passage of particles into space is detached retention as no energy is needed for it. Retention of particles into internal space requires energy. It is, consequently, functions to digest the plant food. The development of particles out of the cells formed because of the food intake is called efflux.
3. ‘All elements that are present in a plant need not be essential to its survival.’ Comment.
Plants absorb different types of nutrients from the soil. If the nutrients absorbed do not help in physiology and metabolism, then they may not be essential. Some of the plants grow near radioactive sites and accumulate radioactive metals. In some cases when the plants grow near the mining sites, the gold and selenium get accumulated, but these are not essential nutrients for plants.
4. Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.
The five deficiency symptoms in plants are Chlorosis, Necrosis, Inhibition of cell division, Delay in flowering and Deformation.
Chlorosis: Due to deficiencies of N, K, Mg, S, Fe, Mn, Zn and Mo.
Necrosis: Caused by the deficiency of Ca, Mag, Cu and K.
Inhibition: Deficiency of Mo, N, K and S.
Delay in flowering: Caused by the reduced concentration of N, S and Mo.
Deformation: Caused by the deficiency of boron.
A better understanding of the same could be found through the link, Chapter 12 Class 11 Mineral Nutrition.
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?
In Chapter 12 Class 11 Mineral Nutrition, the steps to follow to find out the real deficient mineral is to observe the morphological changes in all the parts of the plant thoroughly. The changes that you observe should be compared with the standard tables. You have to check experimentally by adding the nutrient one by one and by observing the recovery of the plant by the addition of a particular nutrient. This method can help us to know the deficient mineral element.
6. What is mineral nutrition Class 11?
Mineral nutrition is mainly the study of the modes of absorption, distribution and metabolism of several minerals by plants for their growth and development, physiology and reproduction. In-depth knowledge of Chapter 12 Class 11 Mineral Nutrition is available on the Vedantu website free of cost.
7. How can you know that plant has more than one nutrient?
Certain characteristics of deficiency are shown in every element. The deficiency of one element cannot be fulfilled with the supply of some other element. First, we need to note all the symptoms which are available in different parts of plants. The next step is to compare the information with the available standard symptoms in the table and find out the mineral deficiency. This chapter has many topics and different terms. The proper focus and attention should be given.