Multiple choice

According to Von Mohl,

  1. starch to sugar inter-conversion regulates stomatal opening or closing

  2. osmotic pressure regulates the stomatal opening and closing

  3. opening and closing of stomata takes place by an active transport of K+ ions into the guard cells

  4. transpiration pull regulates stomatal opening or closing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Von Mohl, Osmotic pressure regulates the stomatal opening and closing.

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