Exchange Systems In Plants Flashcards
1
Q
What exchange happens in plants
A
Co2 enters leaves by diffusion
Water and mineral ions are absorbed by roots
2
Q
How does the roots have a large SA
How does the leaves have a large SA
A
Root hairs
Flattened shape and internal air space
3
Q
What’s do plants have to obtain co2 and remove oxygen
A
Stomata
4
Q
Plants mainly lose water vapour in leaves- how is this increased
A
Evaporation in stomata is more rapid in hot/dry/windy conditions
5
Q
What is the effect if plants lose water faster than replaced by roots
A
The stomata can close to prevent wilting
6
Q
How is the size of stomata controlled
A
Guard cells which surround them
