Which of the following fungi is a parasite on mustard plant and causes the disease white rust of crucifers?

Answer: ASolution: White rust occurs in crucifers and is characterised by the appearance of irregular white blisters containing conidiosporangia on the leaves and steams. White rust is caused conidiosporangia on the leaves and stems. White rust is caused by Albugo condida (Cystopus candidus).