Topic 6- Transport in plants and transpiration Flashcards
What is the primary function of the xylem in plants?
To transport water and minerals from the roots up to the rest of the plant.
What is the primary function of the phloem in plants?
To transport sugars and nutrients produced during photosynthesis from the leaves to other parts of the plant.
True or False: Transpiration is the process of water movement through a plant and its evaporation from aerial parts.
True
Fill in the blank: The process by which plants lose water vapor through small openings in their leaves is called __________.
transpiration
What is the role of stomata in transpiration?
Stomata are openings on the leaf surface that allow for gas exchange and the release of water vapor.
Multiple Choice: Which factor does NOT affect the rate of transpiration? A) Temperature B) Humidity C) Soil type D) Wind speed
C) Soil type
What is the term for the loss of water from the surface of leaves?
Transpiration
True or False: Transpiration helps in the cooling of the plant.
True
What is capillary action and how does it relate to water transport in plants?
Capillary action is the ability of water to move through narrow spaces, which helps in the upward movement of water in the xylem.
Fill in the blank: The movement of water and solutes through the xylem is primarily driven by __________.
transpiration pull
What is the significance of root hairs in plants?
Root hairs increase the surface area for water and nutrient absorption from the soil.
Multiple Choice: What is the main driving force for the movement of water in the xylem? A) Gravity B) Capillary action C) Transpiration D) Osmosis
C) Transpiration
What is the role of guard cells?
Guard cells regulate the opening and closing of stomata to control gas exchange and transpiration.
True or False: Higher humidity levels decrease the rate of transpiration.
True
What happens to transpiration rates on a hot, windy day?
Transpiration rates increase due to higher temperatures and wind, which enhance evaporation.
Fill in the blank: The process of water being absorbed by roots and then moving up through the plant is called __________.
water transport
What is the effect of increased light intensity on transpiration?
Increased light intensity typically increases the rate of transpiration as it stimulates stomata to open.
Multiple Choice: Which part of the plant primarily absorbs water? A) Leaves B) Stems C) Roots D) Flowers
C) Roots
What is osmosis and how does it relate to water uptake in plants?
Osmosis is the movement of water through a semi-permeable membrane from an area of low solute concentration to high, aiding water uptake in roots.
What is transpiration caused by?
evaporation and diffusion
