IB skill practice

Explain transport systems in animals and plants

Paper 1, Paper 2 5 marks Difficulty 4

Explain xylem transport

A plant transport diagram in a Melbourne DP Biology practical shows water moving upward from roots to leaves through xylem. Explain the direction and tissue. Enter the answer and choose the interpretation that best matches the biological evidence.

Worked practice: biological evidence and answer

Use the labelled biological evidence first, then connect it to the final answer.