CDFA Pest Prevention Plant Regulation Practice Exam

Peach mosaic is classified as which type of disease?

1. Parasite

2. Fungus disease

3. Virus disease

4. Bacterial disease

The correct answer is: Virus disease

Peach mosaic is classified as a virus disease, which is the correct answer. Viruses are microscopic pathogens that can infect plants, leading to a range of symptoms that can impair growth and yield. In the case of peach mosaic, the disease is caused by a specific virus that can be transmitted through various means, including grafting or the movement of infected plant material. The symptoms associated with peach mosaic include the development of mottled or distorted leaves, stunted growth, and reduced fruit quality. Understanding that peach mosaic is a viral infection helps in implementing the appropriate management strategies, such as using virus-free certified stock for propagation and controlling aphid populations, which can spread the virus. Other classifications, such as parasites, fungus diseases, or bacterial diseases, do not accurately describe peach mosaic. Parasites typically refer to organisms that derive nutrients from another living host, while fungal diseases are caused by fungi, and bacterial diseases arise from pathogenic bacteria. Since peach mosaic specifically results from a viral pathogen, it is essential to identify it as a virus disease for effective control and prevention measures.