- Plant pathogens: Fungi, bacteria, and viruses that cause disease in plants
- Rose black spot: Common fungal disease causing black spots and yellowing leaves
- Tobacco mosaic virus (TMV): Viral disease causing mosaic patterns and stunted growth
- Economic impact: Plant diseases cause billions in agricultural losses annually
- Physical defenses: Waxy cuticles, cell walls, bark, and thorns
- Chemical defenses: Antimicrobial compounds and toxins
This key facts covers Key Facts: Plant Diseases within Plant Diseases and Defenses for GCSE Biology. Plant pathogens, defense mechanisms, disease identification, crop protection It is section 2 of 18 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Plant Diseases and Defenses
What type of pathogen causes rose black spot disease?
Explain how rose black spot affects the growth of infected plants.
Quick recall flashcards
What is a plant pathogen?
A microorganism that causes disease in plants, such as fungi, bacteria, or viruses.
What is rose black spot?
A fungal disease that affects roses, causing black or purple spots on leaves, which turn yellow and drop off, reducing photosynthesis.