Question

Which of the following does NPK denote?

• A. Nitrogen, Potassium, Kinetin
• B. Nitrogen, Protein, Kinetin
• C. Nitrogen, Protein, Potassium
• D. Nitrogen, Phosphorus, Potassium

Answer 1

The correct option is D Nitrogen, Phosphorus, Potassium

NPK is a fertiliser which is a combination of three major macro nutrients Nitrogen, Phosphorous and potassium. Potassium acts an activator of many enzymes and helps in opening and closing of stomata, also maintains the osmotic potential of cells. Nitrogen helps in growth and metabolism and abundance of foliage. Phosphorus plays a key role in energy metabolism because of its presence in ATP, ADP, AMP and pyrophosphate. NPK are critical elements for the proper growth of crop plants

So, the correct answer is 'Nitrogen, Phosphorus, Potassium'