| Front | Describe how carbon dioxide in the air outside a leaf reaches mesophyll cells inside the leaf. (3 marks) |
|---|---|
| Back | (Carbon dioxide enters) via stomata; (Stomata opened by) guard cells; Diffuses through air spaces; Allow concentration gradient. Reject along gradient unless direction made clear Down diffusion gradient; |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Water loss spiracles adaptations insects minimise close lose
Previous card: Function stomata open close exchange gases
Up to card list: AQA Biology Flashcards