GCSE Biology - Plant Disease and Defences

This video covers:
How plants get diseases, e.g. from microorganisms, larger organisms, and mineral deficiencies
How to diagnose plant diseases
How plants defend themselves against diseases

Exam board specific info:
AQA - Triple/separate science only. Suitable for both foundation and higher tier.
IGCSE Edexcel - Not in course
Edexcel - Triple/separate science only. Identifying disease in higher tier
OCR 21st Century - Plant diseases are combined science, but plant defences are triple/separate.
OCR Gateway - Plant diseases in suitable for all courses. Plant defences in triple/separate only. Diagnosing disease is triple/separate and higher tier.