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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
Related Questions: - Ring worm is due to
- Forest of nephridia are present in
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- Secondary productivity is rate of formation of new organic matter by
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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
- Ring worm is due to
- Forest of nephridia are present in
- Canal joining middle ear with buccal cavity is
- Secondary productivity is rate of formation of new organic matter by
- Serum is
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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