Plant disease：练习题

Which of the following is a chemical defence response used by plants to resist invasion by microorganisms?

A horticulturist notices a plant has malformed leaves and stunted growth. Which of the following is an appropriate Higher Tier (HT) method for detecting the presence of a disease?

Which of the following describes the most accurate sequence for the identification of a specific plant pathogen in a commercial setting?

Which of the following is a mechanical adaptation used by plants to deter animals from eating them?

Which statement correctly describes a physical defence response used by a plant to resist the invasion of microorganisms?

Explain why a plant infected with tobacco mosaic virus (TMV) often shows stunted growth, specifically referring to the effect of leaf discolouration on metabolic processes.

Compare the physiological effects of nitrate ion deficiency and magnesium ion deficiency on plant growth, explaining the specific metabolic reason for each symptom.

A farmer observes that some of their crops have developed yellow leaves and stunted growth.
Describe two different ways the farmer could identify the specific pathogen causing these symptoms.