Adaptations of plants for photosynthesis: gas exchange and stomata
You can describe how plants are adapted to take in and release gases to support photosynthesis.
Adaptations of plants for photosynthesis: gas exchange and stomata
You can describe how plants are adapted to take in and release gases to support photosynthesis.
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Lesson details
Key learning points
- Plant leaves take in carbon dioxide gas from the air for photosynthesis
- The oxygen made by photosynthesis is released as a gas from leaves into the air
- This process is called gas exchange
- Leaves have small holes in their surface called stomata for gas exchange
- Molecules of gases move through open stomata by diffusion
Keywords
Gas exchange - Gas exchange in plants is when photosynthesising leaves take in carbon dioxide gas and release waste oxygen gas.
Stomata - Small holes in the surfaces of a leaf.
Guard cells - Cells next to stomata that can change shape to open and close the stomata.
Diffusion - Diffusion is caused by the continuous random movement of molecules of a gas (or of a liquid).
Net movement - When more molecules of a gas (or of a liquid) diffuse from an area of higher concentration to an area of lower concentration.
To help you plan your year 9 science lesson on: Adaptations of plants for photosynthesis: gas exchange and stomata, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 9 science lesson on: Adaptations of plants for photosynthesis: gas exchange and stomata, download all teaching resources for free and adapt to suit your pupils' needs.
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Explore more key stage 3 science lessons from the Plant nutrition and photosynthesis unit, dive into the full secondary science curriculum, or learn more about lesson planning.
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