Class 11 Biology - Chapter Mineral Nutirtion NCERT Solutions | All elements that are present in a plant
Welcome to the NCERT Solutions for Class 11th Biology - Chapter Mineral Nutirtion. This page offers a step-by-step solution to the specific question from Excercise 1 , Question 1: all elements that are present in a plant need not....
Question 1
All elements that are present in a plant need not be essential to its survival. Comment.
Answer
Plants tend to absorb different kinds of nutrients from soil. However, a nutrient is inessential for a plant if it is not involved in the plant’s physiology and metabolism. For example, plants growing near radioactive sites tend to accumulate radioactive metals. Similarly, gold and selenium get accumulated in plants growing near mining sites. However, this does not mean that radioactive metals, gold, or selenium are essential nutrients for the survival of these plants.
More Questions From Class 11 Biology - Chapter Mineral Nutirtion
- Q:-
What are the steps involved in formation of a root nodule?
- Q:- Explain with examples: macronutrients, micronutrients, beneficial nutrients, toxic elements and essential elements.
- Q:- Why is purification of water and nutrient salts so important in studies involving mineral nutrition using hydroponics?
- Q:- 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. - Q:- What are the conditions necessary for fixation of atmospheric nitrogen by Rhizobium. What is their role in N2 -fixation?
- Q:- How are the minerals absorbed by the plants?
- Q:- Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.
- Q:- 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:- 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?
Popular Questions of Class 11 Biology
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- Q:- Discuss how classification systems have undergone several changes over a period of time?
- Q:- What is the basis of classification of algae?
- Q:- What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?
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- Q:- Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?
- Q:-
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
- Q:- What is the average cell cycle span for a mammalian cell?
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3 Comment(s) on this Question
Anushreee
2019-09-06 17:45:42
Ya
Nancy Kundlas
2018-05-23 17:57:20
ððð
Ayesha
2018-04-20 16:45:34
Thank u
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