FORESTRY
PLANT PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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O2 concentration
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CO2 concentration
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Light
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Temperature
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Detailed explanation-1: -CO2 concentration: Stomata open at low concentration and close at high concentration. Water availability: Underwater stress condition stomata get close due to ABA hormone. Whereas concentration of oxygen does not have a great impact on stomatal movement. Thus, the correct answer is option A.
Detailed explanation-2: -Reactive oxygen species (ROS) are major regulators of stomatal movement, particularly in response to abiotic and biotic stress [18, 19]. ROS, particularly hydrogen peroxide (H2O2) and superoxide (O2−), are widely produced within different cellular compartments of plants.
Detailed explanation-3: -Stomata have two main functions, namely they allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breath. The other main function is regulating water movement through transpiration.