Podcast
Questions and Answers
What primarily drives the opening of stomata in plants?
What primarily drives the opening of stomata in plants?
- Decreased carbon dioxide concentration in surrounding air
- Increased water potential within guard cells (correct)
- Increased temperature leading to evaporative loss
- Higher levels of potassium ions in the leaf
How does water potential influence the closing of stomata?
How does water potential influence the closing of stomata?
- Increased light conditions directly affect water potential
- Decreased water potential leads to turgor loss in guard cells (correct)
- High external humidity increases water potential temporarily
- Lower water potential in guard cells causes them to swell
What happens to stomata when a plant experiences water stress?
What happens to stomata when a plant experiences water stress?
- Stomata will open during the night to absorb moisture
- Stomata open to increase gas exchange
- Stomata remain unaffected
- Stomata close to conserve water (correct)
Which of the following is not a factor affecting water potential in plants?
Which of the following is not a factor affecting water potential in plants?
The relationship between water potential and stomatal movement is primarily mediated by which process?
The relationship between water potential and stomatal movement is primarily mediated by which process?
Flashcards
Stomata opening
Stomata opening
Stomata open when water potential in guard cells increases.
Guard cells
Guard cells
Specialized cells that surround stomata and regulate their opening and closing.
Water potential
Water potential
A measure of the tendency of water to move from one area to another.
Stomata closing
Stomata closing
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Role of water potential
Role of water potential
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