Q1. 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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Q2. 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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Q3. Iron deficiency in plants typically leads to which of the following symptoms? (2022)
Solution:
Iron deficiency causes interveinal chlorosis, where the areas between the veins of leaves turn yellow.
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Q4. 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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Q5. 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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Q6. Which of the following is NOT a function of nitrogen in plants? (2023)
Solution:
While nitrogen is essential for protein synthesis, nucleic acids, and chlorophyll production, it does not directly participate in the photosynthesis process.
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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. What is the function of phosphorus in plants? (2021)
Solution:
Phosphorus is crucial for energy transfer in plants, particularly in the form of ATP (adenosine triphosphate).
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Q9. Which nutrient is crucial for energy transfer in plants? (2020)
Solution:
Phosphorus is vital for energy transfer as it is a component of ATP, the energy currency of the cell.
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Q10. Which of the following elements is considered a secondary macronutrient? (2023)
Solution:
Calcium is classified as a secondary macronutrient, important for cell wall structure and stability.
