Transport in Plants

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Xylem and phloem

Subtopic

Xylem and phloem under Transport in Plants for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$In a root, which layer of cells must water cross to reach the xylem in the center?$
A. $Pith$
B. $Cortex$
C. $Phloem$
D. $Cuticle$
2.
$Which of these is a function of the companion cell?$
A. $Transporting water by osmosis$
B. $Providing ATP for translocation$
C. $Protecting the plant from pests$
D. $Storing water for transpiration$
3.
$What happens to the pressure in the phloem at the source as sucrose is actively loaded into it?$
A. $It decreases$
B. $It increases$
C. $It stays the same$
D. $It drops to zero$

Download the worksheet for Transport in Plants - Xylem and phloem to practice offline. It includes additional chapter-level practice questions.

Water uptake

Subtopic

Water uptake under Transport in Plants for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the main reason plants need to take up water continuously?$
A. $To replace water lost by transpiration$
B. $To keep the roots warm$
C. $To wash away excess minerals$
D. $To prevent the soil from drying out$
2.
$Which of the following describes the pathway of water through the cortex?$
A. $Only through the cell walls$
B. $Only through the cytoplasm$
C. $Via both cell walls and through the cells$
D. $Through the phloem vessels$
3.
$What is the significance of the root hair cell's thin cytoplasm layer?$
A. $It allows more space for the large vacuole$
B. $It makes the cell lighter$
C. $It stops the cell from using energy$
D. $It prevents the nucleus from functioning$

Download the worksheet for Transport in Plants - Water uptake to practice offline. It includes additional chapter-level practice questions.

Transpiration

Subtopic

Transpiration under Transport in Plants for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the relationship between leaf surface area and the total amount of water lost through transpiration?$
A. $Smaller surface area means more water loss$
B. $Larger surface area means more water loss$
C. $Surface area does not affect water loss$
D. $Larger surface area means less water loss$
2.
$In a potometer experiment, why is the shoot usually cut underwater?$
A. $To wash the leaves$
B. $To prevent air bubbles from entering the xylem$
C. $To increase the rate of photosynthesis$
D. $To keep the plant cool$
3.
$Which of the following is NOT a factor that directly affects the rate of transpiration?$
A. $Light intensity$
B. $Humidity$
C. $Soil nitrogen levels$
D. $Temperature$

Download the worksheet for Transport in Plants - Transpiration to practice offline. It includes additional chapter-level practice questions.

Translocation

Subtopic

Translocation under Transport in Plants for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following describes the concentration of sucrose in the phloem at the sink compared to the source?$
A. $It is higher at the sink$
B. $It is lower at the sink$
C. $It is the same at both$
D. $It is zero at both$
2.
$What is the role of the phloem in a plant during a period where it has no leaves (e.g., winter)?$
A. $It is completely inactive$
B. $It transports stored sugars from roots to developing buds$
C. $It transports water from the air to the roots$
D. $It performs photosynthesis in the dark$
3.
$In a root cross-section, where is the phloem typically found in relation to the xylem 'star' shape in dicots?$
A. $In the center of the xylem$
B. $Between the arms of the xylem$
C. $In the epidermis$
D. $Outside the endodermis$

Download the worksheet for Transport in Plants - Translocation to practice offline. It includes additional chapter-level practice questions.