Phosphorous and Nitrogen is the right answer.
Further explanation
Essential nutrients
Such nutrients which are compulsory for the growth of plants and they intake them from the soil.
Types of essential nutrients
Micronutrient
Such nutrients which are required in very low amount are called micronutrients. Iron, boron, chlorine, manganese, zinc, copper, molybdenum and nickel are micronutrients.
Macro-nutrients
Such nutrients which are required by plants in excess are called macro-nutrients. They are phosphorus, nitrogen, calcium, potassium, sulfur, magnesium, carbon, oxygen and hydrogen.
Limiting nutrients
When one of these supplements is missing or hard to find, it is viewed as a constraining supplement. Phosphorous and nitrogen are normally constraining supplements since plants require a lot of them once a day. Soil supplement in restricted supply brings about hindered development or a lower number of plants in a biological system.
Phosphorous
It is a limiting nutrient in plants. In photosynthesis and breath, P plays a noteworthy role in storage of energy and move as ADP and ATP and DPN and TPN. It is a piece of the RNA and DNA structures, which are the significant parts of hereditary data. Seeds have the most elevated convergence of P in a develop plant, and P is required in enormous amounts in youthful cells, for example, shoots and root tips, where digestion is high and cell division is quick. It helps in root improvement, bloom inception, and seed what's more, organic product advancement. P has been appeared to diminish ailment rate in a few plants and has been found to improve the nature of certain harvests.
Nitrogen
Nitrogen make amino acids, which are the structure squares of proteins. Amino acids are utilized in shaping cellular material, the site for cell division and accordingly for plant development and improvement. Since all plant compounds are made of proteins, N is required for the majority of the enzymatic responses in a plant. It is a noteworthy piece of the chlorophyll particle and is in this way important for photosynthesis. Nitrogen is a fundamental segment of a few nutrients. It improves the quality and amount of dry issue in vegetables and protein in grain crops.
Answer details
Subject: Biology
Level: High school
Key words
Essential nutrients
Types of essential nutrients
Micronutrient
Macronutrients
Limiting nutrients
Phosphorous
Nitrogen
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