Under conditions of high temperature and low humidity, which factor MOST directly exacerbates the transpiration and photosynthesis compromise?
Decreased CO2 concentration
Increased vapor pressure deficit
Reduced soil water potential
Elevated atmospheric pressure
Related Questions
Under conditions of high temperature and low humidity, which factor MOST directly exacerbates the transpiration and photosynthesis compromise?
Decreased CO2 concentration
Increased vapor pressure deficit
Reduced soil water potential
Elevated atmospheric pressure
How do CAM plants minimize the transpiration-photosynthesis compromise?
By increasing the number of stomata on their leaves.
By opening stomata at night and storing CO2 for daytime use.
By having thicker leaves to store more water.
By performing photosynthesis only at night.
On a hot, dry day, a plant is most likely to:
Open its stomata fully to maximize photosynthesis.
Partially close its stomata to conserve water, even though this reduces photosynthesis.
Completely close its stomata to prevent any water loss.
Increase its rate of photosynthesis to compensate for water loss.
The transpiration-photosynthesis compromise is most pronounced in which type of environment?
Cool and humid
Hot and humid
Hot and dry
Cool and dry
Imagine a mutant plant with stomata that are less sensitive to abscisic acid (ABA). Under drought conditions, compared to a wild-type plant, this mutant would MOST likely exhibit:
Lower transpiration rate and higher photosynthetic rate
Higher transpiration rate and lower photosynthetic rate
Lower transpiration rate and lower photosynthetic rate
Higher transpiration rate and higher photosynthetic rate
What role do stomata play in the transpiration and photosynthesis compromise?
They only allow CO2 intake for photosynthesis.
They only facilitate water loss through transpiration.
They regulate the exchange of gases, including CO2 intake and water vapor release.
They have no role in either transpiration or photosynthesis.
A plant is exposed to high light intensity and limited water availability. Which of the following is the most likely physiological response?
Increased stomatal opening to maximize CO2 uptake for photosynthesis.
No change in stomatal aperture, maintaining a balance between transpiration and photosynthesis.
Complete closure of stomata to prevent water loss, halting photosynthesis.
Partial closure of stomata to reduce transpiration, even at the cost of reduced CO2 uptake for photosynthesis.
A researcher observes that a plant species exhibits a lower transpiration rate and higher water use efficiency (WUE) under high light intensity compared to low light. Which physiological adaptation BEST explains this observation?
Increased leaf thickness
Deeper root system
Increased chlorophyll content
Partial stomatal closure
A C4 plant exhibiting high stomatal conductance in response to elevated atmospheric CO2 experiences a sudden drop in CO2 levels. Which of the following is the MOST likely immediate consequence regarding the transpiration and photosynthesis compromise?
Increased transpiration and decreased photosynthetic rate
Decreased transpiration and increased photosynthetic rate
Decreased transpiration and decreased photosynthetic rate
No significant change in either transpiration or photosynthetic rate
Which environmental factor has the most direct impact on the transpiration and photosynthesis compromise?
Soil pH
Light intensity
Water availability
Temperature
