Plant Physiology - Mineral Nutrition

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Q1. Which nutrient is essential for the formation of nucleic acids? (2020)

Solution:

Phosphorus is essential for the formation of nucleic acids (DNA and RNA), which are vital for genetic information and protein synthesis.

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Q2. Which of the following elements is considered a micronutrient? (2023)

Solution:

Iron is classified as a micronutrient, required in smaller amounts compared to macronutrients.

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Q3. What is the role of sulfur in plants? (2023)

Solution:

Sulfur is essential for the synthesis of amino acids and proteins, playing a critical role in plant metabolism.

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Q4. Which of the following is NOT a function of iron in plants? (2022)

Solution:

Iron is not directly involved in cell wall formation; it primarily functions in chlorophyll synthesis and electron transport.

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Q5. Which nutrient is primarily responsible for root development? (2019)

Solution:

Phosphorus is essential for root development and is involved in energy transfer and storage.

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Q6. Calcium is primarily involved in which of the following processes? (2020)

Solution:

Calcium is crucial for maintaining cell wall stability and structure in plants.

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Q7. What is the primary role of potassium in plants? (2020)

Solution:

Potassium plays a crucial role in water regulation and osmotic balance in plants, helping to maintain turgor pressure.

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Q8. Deficiency of which nutrient causes the 'chlorosis' symptom in plants? (2022)

Solution:

Nitrogen deficiency leads to chlorosis, which is the yellowing of leaves due to insufficient chlorophyll production.

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Q9. Which mineral is primarily involved in the synthesis of chlorophyll? (2019)

Solution:

Magnesium is a central component of the chlorophyll molecule, which is essential for photosynthesis.

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Q10. Which of the following is a micronutrient? (2022)

Solution:

Copper is classified as a micronutrient, required in trace amounts for plant growth and development.