Chlorosis in plants is caused by the deficiency of:
Correct answer: D. both a and b
- A. nitrogen
- B. magnesium
- C. potassium
- D. both a and b
Explanation
Chlorosis is the yellowing of leaves due to a lack of chlorophyll, often caused by nutrient deficiencies. Nitrogen is a vital component of chlorophyll, and magnesium is part of the chlorophyll molecule. Therefore, deficiencies in nitrogen and magnesium can both result in chlorosis. Potassium, while important for various plant functions, does not directly affect chlorophyll production, so its deficiency does not typically cause chlorosis.
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About Plant Nutrition and Transport
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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