Question

7. Write on macro- and micro nutrients
required for plant growth.​

Answer 1

Macronutrients  are those nutrients that the body needs in large amounts and  provide the body with energy (calories). They include carbon, hydrogen, nitrogen, oxygen, phosphorous, potassium, calcium, sulfur, and magnesium. Micronutrients are those nutrients that the body needs in smaller amounts which include boron, chlorine, manganese, iron, zinc, copper, and molybdenum. A plant uses these nutrients to support its growth, life cycle, and biological functions

Answer 2

$\huge \mathfrak \red{ \underline {Bonjour}}$

Macronutrients

Macronutrients are required in larger quantities by the plant. Macronutrients are again classified into :

• Structural nutrients: Carbon, hydrogen and oxygen thaild the organic molecules of the cell. They represent tht bue non-mineral class of macronutrients.

• Primary nutrients: Nitrogen, potassium and phosphorus which comprise about 75% of the mineral nutrients of the plant. They are required for the proper functioning of plant enzymes and other biochemical processes

• Secondary nutrients: Calcium, magnesium and sulphur are classified as secondary nutrients.

Micronutrients

Micronutrients are required by the plant in lesser quantities yet, essential for the plant growth and survival. They play a key role in the metabolic activities of the plant. The functions of each of these are given below:

• Boron: It is required for the formation and strengthening of the cell wall, flowering, fruiting and pollen germination.

• Zinc: It helps in photosynthesis and growth regulation.

• Manganese: Manganese plays an important role in photosynthesis and nitrogen metabolism. Delayed maturity and early leaf drop are the consequences of manganese deficiency.

• Iron: Energy transfer, nitrogen reduction and fixation are key functions of iron. Iron deficiency causes yellowing of leaf.

• Copper: Copper is responsible for photosynthesis, grain production and cell wall strengthening.

• Chlorine: This micro-nutrient helps in osmosis, photosynthesis and ionic balance.

Hope it's helpful to you....

✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️