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Which of the following is NOT classified as macronutrient in plant nutrition?
- a)Nitrogen
- b)Phosphorous
- c)Potassium
- d)Iron
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following is NOT classified as macronutrient in plant nut...
The correct answer is Iron.
- Iron is classified as a micronutrient and not as a macronutrient.
Key Points
- There are 17 elements which are required for the sustained growth of plants.
- Out of these 17 elements, 9 are classified as macronutrients and 8 are classified as micronutrients.
- Macronutrients:
- Carbon, hydrogen, oxygen, nitrogen, sulphur, phosphorous, potassium, magnesium and calcium.
- These elements are required in large amounts for plant growth.
- Micronutrients:
- Iron, zinc, copper, nickel, manganese, boron, molybdenum and chlorine.
- The elements are required in small quantities.
Important Points
- Critical elements:
- Nitrogen, phosphorous and potassium are called critical elements, as these are generally lacking in soil. Hence fertility of the soil is affected.
Additional Information
- Nitrogen:
- It helps in the formation of protein and nucleic acids in plants.
- Sulphur:
- It promotes the growth of roots and seeds in plants.
- A lack of sulphur turns the leaves yellow and fruits will not flourish.
- Phosphorus:
- They are found in nucleic acids and phospholipids of plant cells.
- They help in seed formation and maturity of fruits.
- Potassium:
- It helps in the general growth of plants.
- Lack of potassium causes blights on plant leaves and protein synthesis is disrupted.
- Iron:
- It plays a significant role in plant respiration.
- Found mainly in chromatids and protoplasm of plant cells.
- Lack of iron in plant causes chlorosis.
Most Upvoted Answer
Which of the following is NOT classified as macronutrient in plant nut...
Understanding Macronutrients in Plant Nutrition
In plant nutrition, macronutrients are essential elements required in larger quantities for plant growth and development. The three primary macronutrients are:
Micronutrients vs. Macronutrients
In contrast, micronutrients are essential elements needed in smaller amounts. Iron (Fe) is classified as a micronutrient because:
Conclusion
Therefore, among the options provided, Iron is not classified as a macronutrient. Instead, it is a crucial micronutrient that is essential for plant health but needed in much smaller amounts compared to nitrogen, phosphorus, and potassium. Understanding the distinction between macronutrients and micronutrients is critical for effective plant nutrition management.
In plant nutrition, macronutrients are essential elements required in larger quantities for plant growth and development. The three primary macronutrients are:
- Nitrogen (N): Crucial for the synthesis of amino acids, proteins, and chlorophyll.
- Phosphorus (P): Vital for energy transfer, photosynthesis, and the formation of nucleic acids.
- Potassium (K): Important for regulating various physiological processes, including water uptake and enzyme activation.
Micronutrients vs. Macronutrients
In contrast, micronutrients are essential elements needed in smaller amounts. Iron (Fe) is classified as a micronutrient because:
- Essential for Chlorophyll Production: Iron plays a critical role in the formation of chlorophyll, which is vital for photosynthesis.
- Involved in Enzymatic Reactions: It acts as a cofactor for various enzymes involved in plant metabolism.
- Required in Trace Amounts: Unlike macronutrients, plants only require iron in minute quantities for optimal growth.
Conclusion
Therefore, among the options provided, Iron is not classified as a macronutrient. Instead, it is a crucial micronutrient that is essential for plant health but needed in much smaller amounts compared to nitrogen, phosphorus, and potassium. Understanding the distinction between macronutrients and micronutrients is critical for effective plant nutrition management.
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Question Description
Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer? for Software Development 2026 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Software Development 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer?.
Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer? for Software Development 2026 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Software Development 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is NOT classified as macronutrient in plant nutrition?a)Nitrogenb)Phosphorous c)Potassiumd)IronCorrect answer is option 'D'. Can you explain this answer?.
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