Stomata and guard cells
General Science · Grade 10 · about 40 minutes
The pores that make transpiration possible, how guard cells open and close them, and why most sit on the lower surface.
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- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- How water and food move in a plant
- Transpiration: the pull that lifts water
- Root hairs: the plant’s drinking surface
- Mineral salts: uptake against the gradient
- Inside xylem: dead tubes that hold a tree up
- Cohesion, adhesion and the unbroken column
- Inside phloem: living tubes for food
- Ringing a shoot: evidence for translocation
- Stomata and guard cells
- Investigating transpiration with a potometer
- Other ways to investigate transpiration
- Transport, transpiration and plant life in Kenya