What are Macro Nutrients and Why are They Called Macro-nutrients, In Text Question Chapter 15 Improvement in Food

What are macro nutrients and why are they called macro-nutrients, How do plants get nutrients Chapter 15: Improvement in Food Resources Science Class 9 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. In text questions of page no 206 is solved by our expert teachers. You can get ncert solutions and notes for class 9 chapter 15 absolutely free. NCERT Solutions for class 9 Science Chapter 15: Improvement in Food Resources is very essencial for getting good marks in CBSE Board examinations

Q. No. 1: What are macro-nutrients and why are they called macro-nutrients?
Ans:
Macro-nutrients are those nutrients which are required in large quantities for growth and development of plants. Since they are required in large quantities, they are known as macro-nutrient. The six macro-nutrients required by plants are nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur.

Q. No. 2: How do plants get nutrients?
Ans:
Plants get nutrients from air, water, and soil. Soil is the major source of nutrients. Thirteen of these nutrients are available from soil. The remaining three nutrients (carbon, oxygen, and hydrogen) are obtained from air and water.