Exam skills
What the paper asks you to do
- Explain environmental effects on transpiration
- Link vessel structure to transport
- Interpret potometer results cautiously
Plant biology
Transport in flowering plants
Trace water, mineral ions and assimilates through roots, xylem, leaves and phloem.5090 syllabus routeConcept · skill · exam language
What to know
Build the topic around four anchors.
- 01Root-hair absorption
- 02Xylem structure and transpiration
- 03Stomatal control
- 04Translocation in phloem
Common mistakes
Where marks disappear
- Saying a potometer directly measures transpiration
- Confusing xylem with phloem
- Assuming translocation is always upward
Structured practice
Answer these without looking back.
For each prompt, write the biological chain clearly enough that every mark-worthy link is visible.
- 01Explain why wind increases water uptake.
- 02Compare xylem and phloem.
- 03Evaluate one limitation of a potometer.
Continue learning
Use the complete resource route.
Open the student materials, official syllabus or the next topic in sequence.
This independent teaching resource follows the Cambridge O Level Biology 5090 syllabus direction and is not endorsed by Cambridge International Education.