- Created by: Elca
- Created on: 03-05-15 17:48
1) Palisade leaf cells are adapted for Photosynthesis
- Packed with chloroplasts for photosythesis. More of them are crammed at the top of the cell - so they're nearer the light.
- Tall shape means a lot of surface area exposed down the side for absorbing CO2, from the air in the leaf.
- Thin shape means that you can pack loads of them in at the top of a leaf. Palisade leaf cells are grouped together at the top of the leaf where most of the photosynthesis happens.
2) Guard cells are adapted to open and close pores
- Special kidney shape which opens and closes the stomata (pores) in a leaf.
- When the plant has lots of water the guard cells fill with it and go plump and turgid. This makes the stomata open so gases can be exchanged for photosynthesis.
- When the plant is short of water, the guard cells lose water and become flaccid, making the stomata close. This helps stop too much water vapour escaping.
- Thin outer…