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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
- Which of the following insecticide is obtained from the roots of Derris elliptica?
- Which of the following inhibits oxygen release in light phase?
- Cell division cannot be stopped in which phase of the cell cycle?
- Ribosomes are the centre for
- In parasympathetic nervous system which of the following is released
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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