Given is the sequence of events that lead to the opening of stomata in plants during day light:Accumulated of substances X and Y in the guard cell→increase solute concentration in the guard cells→water potential of guard cells→endosmosis of water in the guard cells→ increased turgidity of the guard cells→stomata opens.The letter X, Y and Z represent:
Correct answer: B. Glucose, Potassium ions decreases
- A. Carbon dioxide, Potassium ions, decreases
- B. Glucose, Potassium ions decreases
- C. Carbon dioxide, Hydrogen ions increaes
- D. Glucose, Hydrogen ions increases
Explanation
As concentration of glucose and potassium ions increases, water potential decreases. This causes opening of stomata. So option B is correct.
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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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