Quiz_Plant_Pathogen December 8, 2024 by Vijay Wardhan 1. Severe famine of West Bengal of 1942-43 was due to destruction of rice crop by a fungus called : Helminthosporium Penicillium Puccinia Rhizopus Explanation:The Bengal famine of 1942-43 was caused by the destruction of rice crops by the fungus Helminthosporium oryzae, leading to severe food shortages and starvation. 2. Helminthosporium oryzae was the cause of disaster : Collapse of French industry in 1870 Irish famine is 1845 Bengal famine in 1943 Displacement of planters in Ceylon in 1867 Explanation:Helminthosporium oryzae caused the Bengal famine of 1943 by devastating rice crops, leading to widespread food shortages and famine. 3. Smut of maize is caused by : Ustilago maydis Ustilago avenae Ustilago nuda Ustilago hordei Explanation:Smut of maize, also known as corn smut, is caused by the fungus Ustilago maydis, which infects maize plants and forms characteristic galls. 4. Black rust of wheat is caused by: Puccinia Yeast Rhizopus Penicillium Explanation:Black rust of wheat, also known as stem rust, is caused by the fungus Puccinia graminis. It is a serious disease that affects wheat crops worldwide. 5. A disease is abnormal state that may result due to : Mineral Environment All of these Pathogen Explanation:Diseases can be caused by various factors including environmental conditions, mineral deficiencies, or pathogens such as bacteria, viruses, and fungi. 6. Small epidermal swellings due to infection are called : Shot holes Burnts Eclema Eczema Explanation:Eclema refers to small, raised swellings on the epidermis of plants, often caused by infections or other stress factors. 7. Banana bunchy top is caused by : deuteromycetes mycoplasma virus Xanthomonas Explanation:Banana bunchy top is caused by the Banana bunchy top virus (BBTV). This virus leads to stunted growth and “bunchy” appearance of leaves, severely affecting the productivity of banana plants. 8. Which part of the plant is not affected by Albugo? Root Stem Flower Leaf Explanation:Albugo, the causative agent of white rust, primarily affects the aerial parts of the plant such as leaves, stems, and flowers, but not the roots. 9. A control measure prior to the appearance of a particular disease comes under : Prophylactic measure Therapentic measure Predisposition measure Curative measure Explanation:Prophylactic measures are preventive actions taken to prevent the onset of disease. These measures are implemented before any signs of the disease appear. 10. Which of the following causes smut disease in cultivated plants? Cystopus Puccinia Phytophthora Albugo Explanation:Albugo is a genus of oomycetes that causes white rust and smut diseases in various cultivated plants. Loading …
