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Ustilago causes plant diseases (called smuts) because

A. they parasitize on cereals.

B. they lack mycelium.

C. they develop sooty masses of spores.

D. their affected parts becomes completely black.

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Correct Answer : D.


Smut disease is caused by Ustilago species of basidiomycetes fungi. It is characterized by formation of black coloured chlamydospores or teleutospores (called smut spores) due to which the affected part becomes black.

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