Plant Transport Systems
Biology ⇒ Plant Biology
Plant Transport Systems starts at 7 and continues till grade 12.
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See sample questions for grade 11
A plant is exposed to high wind and low humidity. Predict the effect on its rate of transpiration.
A plant is placed in a solution with a higher solute concentration than its cell sap. What will happen to the plant cells?
Describe how mineral ions are absorbed by plant roots.
Describe how temperature affects the rate of transpiration in plants.
Describe the pressure-flow hypothesis for phloem transport.
Describe the role of lignin in xylem vessels.
A plant is exposed to high wind and low humidity. Predict the effect on its rate of transpiration.
A plant is placed in a solution with a higher solute concentration than its cell sap. What will happen to the plant cells?
Which of the following best describes the direction of phloem transport?
(1) Only upward
(2) Only downward
(3) Both upward and downward
(4) Lateral only
Which of the following best describes the function of stomata?
(1) Absorption of water
(2) Gas exchange and regulation of transpiration
(3) Storage of food
(4) Support of the leaf
Which of the following best explains why water moves up the xylem against gravity?
(1) Capillary action only
(2) Root pressure only
(3) Transpiration pull and cohesion of water molecules
(4) Active transport in xylem
Which of the following factors does NOT directly affect the rate of transpiration?
(1) Light intensity
(2) Wind speed
(3) Soil pH
(4) Humidity
A plant cell placed in pure water will become _______.
Fill in the blank: The loss of water from the aerial parts of a plant is called _______.
Fill in the blank: The movement of substances from the phloem to the tissues where they are used is called _______.
Fill in the blank: The process by which sugars are loaded into the phloem at the source is called _______.
True or False: The apoplast pathway is blocked at the Casparian strip, forcing water to enter the symplast pathway.
True or False: The Casparian strip in the endodermis prevents the passive flow of water and solutes into the stele.
True or False: The movement of water and minerals from the soil into the root hair cells is mainly by diffusion.
True or False: The movement of water in the apoplast pathway is entirely through the cytoplasm.
