State 2 areas where materials are exchanged in plants?

How is surface area in plants increased to help with the exchange of materials ?

What is the function of stomata ?

Plants mainly lose water vapour from their leaves. Most of the loss of water vapour takes place through the stomata. What can increase the rate of water loss and how can this be reduced ?

What controls the size of the stomata ?

Describe the structures in flowering plants that allow for the transport of substances