trydarthiad Flashcards
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What is transpiration?
Transpiration is the process by which water vapor is released from the leaves of plants into the atmosphere.
True or False: Transpiration only occurs during the day.
False: Transpiration can occur both day and night, but rates are typically higher during the day.
Fill in the blank: Transpiration primarily occurs through small openings called __________.
stomata
What role do stomata play in transpiration?
Stomata are openings on the leaf surface that allow water vapor to exit and gases like carbon dioxide to enter.
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 is the main purpose of transpiration in plants?
The main purpose of transpiration is to help with the uptake of nutrients and water from the soil and to regulate temperature.
True or False: High humidity decreases the rate of transpiration.
True: High humidity reduces the water vapor gradient between the inside and outside of the leaf, slowing transpiration.
What is the name of the process that involves the movement of water up through a plant?
The process is called capillary action.
Fill in the blank: Transpiration contributes to the __________ cycle.
water
Multiple Choice: Which of the following factors increases transpiration? A) High humidity B) Low temperature C) High wind speed D) Low light intensity
C) High wind speed
What is the effect of light intensity on transpiration?
Increased light intensity typically increases transpiration rates as it causes stomata to open.
True or False: Transpiration helps cool the plant.
True: The evaporation of water from leaves helps to cool the plant.
What is the term for the loss of water vapor from plant surfaces?
Evapotranspiration
Fill in the blank: The __________ is the tissue responsible for transporting water in plants.
xylem
Multiple Choice: Which plant adaptation reduces transpiration? A) Thick cuticle B) Large leaves C) Open stomata D) High surface area
A) Thick cuticle
What environmental condition would likely lead to increased transpiration in a plant?
Warm temperatures and low humidity.
True or False: Transpiration is an active process requiring energy.
False: Transpiration is a passive process driven by physical forces.
What is the primary driving force behind transpiration?
The primary driving force is the difference in water vapor concentration inside and outside the leaf.
Fill in the blank: The __________ is the layer of cells beneath the cuticle that helps reduce water loss.
epidermis
Multiple Choice: Which of the following would decrease the rate of transpiration? A) Increased wind B) Higher temperature C) Lower humidity D) Closure of stomata
D) Closure of stomata
What is the relationship between transpiration and photosynthesis?
Transpiration facilitates the uptake of carbon dioxide, which is essential for photosynthesis.
True or False: All plants have the same rate of transpiration.
False: Different plants have varying rates of transpiration based on their adaptations and environmental conditions.
What is a common method used to measure transpiration rates in plants?
A potometer is commonly used to measure transpiration rates.
Fill in the blank: The __________ gradient drives the movement of water from roots to leaves.
water potential
