Plant Diseases 2 (T)

• What are the types of plant diseases mentioned?

  • Pathogen-caused diseases (e.g., viral, fungal, bacterial)
  • Plant ion deficiency diseases
• What causes Rose black spot?

  A fungus
• What type of pathogens can attack plants?

  Bacterial pathogens
• Why are insects not considered pathogens?

  Because they do not cause infectious diseases
• How can insects affect plants?

  By extracting nutrients such as sugars, which stunts growth
• What are the potential symptoms of plant diseases?

  • Discoloration spots on leaves
  • Stunted growth
  • Decay or rot
  • Malformed stems or leaves
• What are the three ways to identify plant diseases?

  1. Use a garden manual or website
  2. Take the infected plant to a lab
  3. Use testing kits containing monoclonal antibodies
• What causes stunted growth in plants?

  A lack of the nitrate ion
• Why is nitrate important for plants?

  It is needed for protein synthesis and growth
• What condition is caused by a lack of magnesium ion?

  Chlorosis
• What role does magnesium play in plants?

  It is required to make chlorophyll
• What happens to leaves when there is a magnesium deficiency?

  They lose their green coloration
• What should students learn about plant ion deficiency diseases?

  • Examples often appear in exams
  • Importance of nitrate and magnesium ions