Biological Classification Question 109
109. Ustilago causes plant diseases called smut because
(a) they parasitise cereals
(b) mycelium is black
(c) they develop sooty masses of spores
(d) affected parts becomes completely black.
Show Answer
Answer : d
Hints & Solutions
(d) Smut disease is caused by Ustilago species of basidiomycetes fungi. It is characterised by formation of black coloured chlamydospores or teleutospores called smut spore due to which the affected part becomes black.
