The given diagram represents guard cells of stomata in two different conditions.Which of the following options is TRUE about conditions I and II in guard cells?
Correct answer: C. Condition I indicates turgid guard cells with an open stomatal pore, while Condition II shows flaccid guard cells with a closed stomatal pore
- A. Condition I shows guard cells in a turgid state, leading to a closed stomatal pore
- B. Condition II represents flaccid guard cells, resulting in an open stomatal pore
- C. Condition I indicates turgid guard cells with an open stomatal pore, while Condition II shows flaccid guard cells with a closed stomatal pore
- D. Both conditions show guard cells in the same state, impacting stomatal opening similarly
Explanation
The correct answer is Option C.In Condition I, the guard cells are turgid, meaning they are swollen due to water intake, which causes the stomatal pore to open. This condition is typical during the day when photosynthesis is active.In Condition II, the guard cells are flaccid, indicating water loss, causing the stomatal pore to close. This usually occurs at night or during water stress conditions to conserve water.
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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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