2.3 Flashcards
What is the main organ for transpiration in plants?
Leaves
True or False: Transpiration primarily occurs in the roots of plants.
False
Fill in the blank: Transpiration helps in the ______ of water and nutrients in plants.
transport
What is the process by which water vapor is lost from plant leaves?
Transpiration
Which structures in leaves are primarily involved in transpiration?
Stomata
Multiple Choice: Which factor does NOT affect the rate of transpiration? (A) Temperature (B) Humidity (C) Soil pH (D) Wind speed
C) Soil pH
What role do guard cells play in transpiration?
They regulate the opening and closing of stomata.
True or False: Transpiration can help cool the plant.
True
What is the term for the loss of water vapor from the aerial parts of a plant?
Evapotranspiration
Fill in the blank: The rate of transpiration increases with higher ______.
temperature
Multiple Choice: Which of the following conditions would likely increase transpiration? (A) High humidity (B) Low temperature (C) High wind speed (D) Wet soil
C) High wind speed
What happens to transpiration rates when stomata are closed?
Transpiration rates decrease.
What is the main purpose of transpiration for plants?
To facilitate nutrient uptake and maintain temperature.
True or False: All plants transpire at the same rate.
False
What environmental factor is most directly linked to the opening of stomata?
Light
What is the relationship between transpiration and photosynthesis?
Transpiration helps in the uptake of CO2 for photosynthesis.
Fill in the blank: Plants lose water primarily through their ______.
leaves
Multiple Choice: Which type of plant typically has a higher rate of transpiration? (A) Succulents (B) Cacti (C) Deciduous trees (D) Grasses
C) Deciduous trees
What is the term for the water potential gradient that drives water movement in plants?
Transpirational pull
True or False: Transpiration can affect local weather patterns.
True
How does humidity affect the rate of transpiration?
Higher humidity reduces the rate of transpiration.
What is the role of xylem in relation to transpiration?
Xylem transports water from roots to leaves.
Fill in the blank: The loss of water through transpiration creates a negative pressure that aids in the ______ of water.
pulling
What adaptation helps reduce transpiration in desert plants?
Thick cuticles and reduced leaf surface area.
Multiple Choice: Which type of climate would generally have the highest rate of transpiration? (A) Tropical (B) Arctic (C) Desert (D) Temperate
A) Tropical
True or False: Transpiration is only beneficial for plants.
False
What is a common effect of excessive transpiration on plants?
Wilting or dehydration
The higher the light intensity?
The higher the rate of transpiration (until it become constant)
The lower relative air humidity of the surrounding atmosphere?
The faster the water vapours escapes from the stomata. (high transpiration)
The higher the temperature?
The higher the rate of transpiration
The faster the air movement?
The faster the rate of transpiration
