Plant Structure Flashcards
1
Q
Guard cells
A
-take in water by osmosis to become turgid, opening the stomata
-lack of water results in guard cells becoming flaccid, closing the stomata
2
Q
Stomata
A
-stomata on the lower surface allow for gas exchange, needed for photosynthesis
-no stomata on the upper surface to reduce water loss through transpiration
3
Q
Waxy cuticle
A
Minimise water loss via evaporation
4
Q
Upper epidermis
A
Transparent to let light through
5
Q
Palisade mesophyll
A
Many chloroplasts containing chlorophyll which traps light for photosynthesis
6
Q
Spongey mesophyll
A
Spaces between cells to allow for gas exchange so carbon dioxide can enter/ oxygen can leave the cells
