Which element has function in opening and closing of stomata?
Correct answer: A. K
- A. K
- B. Mg
- C. Cu
- D. Fe
Explanation
Potassium (K+) plays a crucial role in the opening and closing of stomata in plants. Stomata are small pores found on the surfaces of leaves, stems, and other plant organs. They are responsible for gas exchange, allowing plants to take in carbon dioxide (CO2) for photosynthesis while releasing oxygen (O2) and water vapor. Hence option A is correct.
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About Forms and Functions of Plants
Plant nutrition and transport cover mineral uptake, photosynthesis, xylem movement of water and minerals, and phloem translocation of sugars. Plant growth regulators include auxins, gibberellins, cytokinins, abscisic acid and ethene, whose effects on cell division, elongation, dormancy, fruit ripening and tropic responses should not be confused with mineral nutrition.
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