Describe the function of the heart. 

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Nutrients 

Nutrients are moved inside a plant to where they are most needed. For example, a plant will try to supply more nutrients to its younger leaves than its older ones. So when nutrients are mobile, the lack of nutrients is first visible on older leaves. However, not all nutrients are equally mobile. When a less mobile nutrient is lacking, the younger leaves suffer because the nutrient does not move up to them but stays lower in the older leaves. This phenomenon is helpful in determining what nutrients a plant may be lacking. Nutrients are broadly categorised as macronutrients and micronutrients. For normal growth process, plants require nine different macronutrients and seven different micronutrients. The macronutrients are carbon, hydrogen, oxygen, nitrogen, potassium, calcium, phosphorus, magnesium and sulphur. Nitrogen, phosphorus and potassium are mobile nutrients, while the others have varying degrees of mobility. The micronutrients are iron, chlorine, copper, manganese, zinc, molybdenum and boron. Plants require a few macronutrients in large amounts and several micronutrients in trace amounts. Most of these are obtained from the soil through the roots.

1. Name the different types of nutrients. 
2. Deficiency of mobile nutrients is first visible in which part of the plant body. 
3. How does the mobility of nutrients affect the growth of plants? 
4. Name any two macronutrients and micronutrients. 
5. From where does the plant get its supply of nutrients? 
6. Name any two mobile nutrients.