Transport in Plants
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Xylem and phloem
SubtopicXylem and phloem under Transport in Plants for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which statement correctly describes the movement of materials in the xylem?
A.Movement is bidirectional, from sources to sinks
B.Movement is unidirectional, from roots to leaves
C.Movement is powered by the active transport of sugars
D.Movement is controlled by the companion cells
- 2.
In the provided diagram of a vascular bundle within a dicotyledonous stem, which part is represented by label B?
A.Xylem
B.Phloem
C.Cortex
D.Epidermis
- 3.
What is the main function of lignin in the cell walls of xylem vessels?
A.To allow for the active transport of ions
B.To provide structural support and prevent the vessel from collapsing
C.To facilitate the movement of sucrose by osmosis
D.To act as a semi-permeable membrane for molecules
Download the worksheet for Transport in Plants - Xylem and phloem to practice offline. It includes additional chapter-level practice questions.
Water uptake
SubtopicWater uptake under Transport in Plants for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which tissue in the plant is responsible for the upward transport of water and dissolved mineral ions?
A.Mesophyll
B.Xylem
C.Phloem
D.Epidermis
- 2.
The diagram shows the pathway of water movement through a plant. Which sequence correctly identifies the stages A, B, and C?
A.A: Xylem, B: Cortex, C: Root hair
B.A: Cortex, B: Root hair, C: Xylem
C.A: Root hair, B: Cortex, C: Xylem
D.A: Root hair, B: Xylem, C: Cortex
- 3.
By which process does water move from the soil into the cytoplasm of a root hair cell?
A.Active transport against a concentration gradient
B.Osmosis down a water potential gradient
C.Translocation through the phloem
D.Facilitated diffusion of glucose
Download the worksheet for Transport in Plants - Water uptake to practice offline. It includes additional chapter-level practice questions.
Transpiration
SubtopicTranspiration under Transport in Plants for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
In the following flowchart representing the movement of water through a plant, which transition represents the stage where water evaporates into the sub-stomatal air spaces?
A.From Soil to Roots
B.From Xylem to Mesophyll cells
C.From Mesophyll cells to Air Spaces
D.From Air Spaces to Atmosphere
- 2.
Which of the following environmental factors would most likely lead to the lowest rate of transpiration?
A.High light intensity
B.High wind speed
C.High humidity
D.High temperature
- 3.
Which specialized tissue is responsible for the upward transport of water and dissolved minerals during the transpiration stream?
A.Phloem
B.Xylem
C.Sclerenchyma
D.Chlorenchyma
Download the worksheet for Transport in Plants - Transpiration to practice offline. It includes additional chapter-level practice questions.
Translocation
SubtopicTranslocation under Transport in Plants for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Refer to the diagram of a plant during active growth. Which part typically acts as the primary 'Source' during peak summer?
A.Developing flower buds
B.Mature leaves
C.Growing root tips
D.Developing fruit
- 2.
Which specific tissue is responsible for the transport of sucrose through the plant?
A.Xylem vessels
B.Sieve tube elements
C.Spongy mesophyll
D.Palisade mesophyll
- 3.
In which direction does translocation occur within a plant's vascular system?
A.Only from the roots to the leaves
B.Only from the leaves to the roots
C.From a source to a sink
D.From a sink to a source
Download the worksheet for Transport in Plants - Translocation to practice offline. It includes additional chapter-level practice questions.