Question

Name the macronutrients and micronutrients required by plants to grow.

Answer 1

Answer:

1. Nutrient elements also called as minerals are required by the plants to grow well and complete their life-cycle.
2. Minerals are absorbed by active transport and diffusion.
3. Active transport- Movement of minerals or ions or molecules from the region of lower concentration to the region of higher concentration is called active transport.
4. It utilises energy for the transportation of minerals.
5. Diffusion- Movement of minerals or ions or molecules from the region of lower concentration to the region of higher concentration is called active transport.
6. Minerals are divided into- macronutrients and micronutrients.

Macronutrients-

1. Macronutrients are required in large quantities like nitrogen, phosphorus, potassium.
2. Nitrogen (N) is important for protein formation.
3. Deficiency of Nitrogen causes yellowing of leaves, wrinkling of grains.
4. Phosphorus (P) is the main constituent of cell membrane and also of protein.
5. Deficiency of phosphorus causes purple and red spots on leaves, seed germination delays.
6. Potassium (K) is present in abundant in growing tissues and also required for closing and opening of stomata.
7. Deficiency of potassium causes poor growth of the plant and also reduces the rate of transpiration.

Micronutrients-

1. Micronutrients are required in lesser amounts like zinc, manganese, iodine, carbon, hydrogen, etc.
2. Iron (Fe) is important for protein formation.
3. Deficiency of Iron causes yellowing of leaves.
4. Manganese (Mn) is the main constituent of some of the enzymes.
5. Deficiency of Manganese causes yellowing of leaves, and grey spots on the leaves.
6. Zinc (Zn) is the constituent of plant hormones, it also plays the role in activating the enzymes.
7. Deficiency of Zinc causes yellowing of leaves, growth of the plant is stunted.