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Bacterial leaf blight of rice is caused by a species
Options
(a) Alternaria
(b) Erwinia
(c) Xanthomonas
(d) Pseudomonas
Correct Answer:
Xanthomonas
Explanation:
Bacterial leaf blight of rice is caused by Xanthomonas oryzae a bacterium which is gram-negative, aerobic, capsulated, and motile with a single polar flagellum Primary infection is carried through the infected seeds. The entry of the pathogen occurs through wounds and stomata. The symptoms of the disease is the appearance of linear, yellow to straw coloured stripes, usually on both the edges of the leaf. As the disease progresses, the drying and twisting of the leaf tip occurs. The most destructive phase of
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Topics: Diversity In Living World
(339)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The genes controlling seven traits in pea, as studied by Mendel, were later found to be
- The pineapple which under natural conditions is difficult to blossom has been made
- Which of the following surrounds the vacuole?
- In most of the fungi, the food material is stored in the form of
- Electron microscopic studies of the sarcomeres have revealed that during muscle
Topics: Diversity In Living World (339)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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