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Black (stem) rust of wheat is caused by
Options
(a) Alternaria solani
(b) Ustilago nuda
(c) Puccinia graminis
(d) Xanthomonas oryzae
Correct Answer:
Puccinia graminis
Explanation:
Black stem rust is caused by Puccinia graminis. The genus Puccinia includes 700 species, which cause rust disease of many economic plants such as wheat, barley, oats, etc. It is called a rust because of the reddish brown color of the spores that are found chiefly upon the surface of the host leaves and stem. P. graminis is heteroecious i.e., requiring two hosts, wheat and barberry for the completion of normal life cycle. According to the nature of the spores, the life cycle of the P.graminis is divided into
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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 one is not biofertilizer
- Fall of immature leaf is due to the deficiency of
- In how many steps CO is released in aerobic respiration of pyruvic acid
- Which one of the following is widely distributed in a cell
- Active transport of ions by the cell requires
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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