A) Cercospora
B) Colletotrichum
C) Agrobacterium
D) Pyricularia
Correct Answer: C
Solution :
Hypertrophy means the cells of one place in the plant increases their number so, that part appears as a swallon part. It is found in stem or root of tobacco. In tobacco this is due to Agrobacterium tumifaciens pathogen.
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