Xylem and Phloem Transport

IGCSE Edexcel Biology
2.53-2.54 Transport in Plants
Key Concept: Xylem transports water and mineral ions; phloem transports sucrose and amino acids.

Section A: Roles

1. State the role of xylem. [2]
2. State the role of phloem. [2]

Section B: Comparison

3. Give two differences between xylem and phloem. [4]
4. Identify what is transported in each tissue. [2]

a) Xylem

b) Phloem

Total marks: 10

Mark Scheme

1. Transports water and mineral ions from roots to the rest of the plant [2]
2. Transports sucrose and amino acids around the plant [2]
3. Any two: xylem vessels are dead and lignified, flow is one-way; phloem has living cells and flow can be two-way [4]
4. Xylem: water/mineral ions; Phloem: sucrose/amino acids [2]