CAIE IGCSE Biology 8.2.3 Water Pathway Through a Plant
Practise sequencing water movement from soil into root hair cells, across the cortex to xylem, then through the stem to leaf mesophyll and air spaces.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- sequence soil, root hair cell, root cortex, xylem and mesophyll in the water pathway
- state that water enters root hair cells by osmosis down a water-potential gradient
- identify xylem as the plant tissue carrying water from roots toward leaves
8.2.3—Pathway taken by water through question 1
[Maximum number: 2]
Describe the pathway a water molecule takes from the soil to reach the xylem.
any two from:
(enters) the root hair (cell) ;
moves through the (root) cortex (cells to the xylem) ;
AVP ;
e.g. through a partially permeable / cell
(surface), membrane (by osmosis / diffusion)
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