What is transpiration?

What does the xylem do?

What does the phloem do?

What is the epidermis of the plant?

What is the hypodermis?

What is the cortex?

What is the endodermis?

What is the stele?

What is the Casparian strip?

When does root pressure occur?

What is guttation?

What causes guttation?

What is the function of the phloem?

Structure of the phloem?

What are plasmodesmata?

How does water flow through the phloem?

What is phloem loading and how does it occur?

How do we sample the phloem sap scientifically?

Why don't damaged plants 'bleed ' to death?

How does the phloem act as an 'information highway'?