IGCSE biology notes on plant transport compare xylem and phloem, explain transpiration stream, and list factors affecting transpiration rate.

Hub: IGCSE biology notes · Transport in plants · Photosynthesis.

Xylem vs phloem table

	Xylem	Phloem
Substance	Water + minerals	Sucrose (assimilates)
Direction	Upwards mainly	Up and down
Structure	Dead hollow cells	Living sieve tubes

Transpiration factors

Wind, temperature, humidity, light — predict effect in notes with arrows ↑↓.

Frequently asked questions

Root hair cell notes?

Link to cell structure notes and transport in cells.

Potometer practical?

One diagram + variables in margin.

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