Plant Diseases
Biology ⇒ Plant Biology
Plant Diseases starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Plant Diseases.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
A farmer notices yellowing and wilting of tomato plants. What could be a possible cause?
A field of wheat shows yellow streaks on leaves and reduced yield. What disease might this indicate?
Describe how environmental conditions can influence the spread of plant diseases.
Describe the difference between a symptom and a sign of plant disease.
Describe two common symptoms of plant diseases.
Explain the role of sanitation in preventing plant diseases.
Explain why crop rotation helps prevent plant diseases.
Explain why overuse of chemical pesticides can be harmful in managing plant diseases.
List two ways plant diseases can be transmitted from one plant to another.
Name one method used to diagnose plant diseases.
What is the main difference between a bacterial and a viral plant disease?
A farmer observes that after a period of heavy rainfall, several plants in his field develop water-soaked lesions and a foul smell. Laboratory tests confirm the presence of Pectobacterium carotovorum. What type of plant disease is this, and what is the main mechanism by which this pathogen causes damage?
A plant pathologist is studying a new disease that causes rapid wilting and death of plants. She observes that the disease spreads quickly in warm, humid conditions and that the pathogen can survive in soil for several years. What type of pathogen is most likely responsible, and why?
Describe the role of vectors in the transmission of plant viral diseases and give one example of a vector and the disease it spreads.
Explain how genetic engineering can be used to develop disease-resistant plants. Provide one example of a disease and the genetic modification used to combat it.
Explain why monoculture farming can increase the risk of plant disease outbreaks.
