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Transpiration Stream – OCR Gateway B2.2.5 (Challenges of Size) – PowerPoint Lesson

This fully editable PowerPoint is designed to support the OCR Gateway GCSE Biology B (9–1) specification, specifically B2.2.5 – Challenges of Size, focusing on the transpiration stream in plants.

Perfect for classroom delivery or remote teaching, this resource clearly explains the key processes involved in water transport in plants and the role of transpiration in the movement of water through the xylem.

Learning Objectives:

• Describe the structure and function of xylem tissue.
• Explain how water moves through a plant via the transpiration stream.
• Identify the factors that affect the rate of transpiration.
• Interpret data from experiments investigating transpiration.

What’s included:

Visually engaging and easy-to-follow PowerPoint slides

Diagrams and animations to support understanding of xylem transport and transpiration

Key definitions and keywords for literacy support

Quick AfL questions and plenary quiz to check understanding

Discussion prompts and stretch/challenge questions for higher-tier students

Suitable for:

Year 10/11 students studying OCR Gateway GCSE Biology B

Ideal for whole-class teaching, revision, or independent learning