Multiple choice

Identify the mismatched pair of disease and its causative agent.

  1. Black root rot of cotton : Thielaviopsis basicola

  2. Black rot of crucifers : Xanthomonas campestris

  3. Gray mold of hemp : Agrobacterium tumefaciens

  4. Downy mildew of mustard : Peronospora parasitica

  5. Bottom rot of lettuce : Rhizoctonia solani

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct answer. The most important disease of hemp is gray mold, caused by the fungus Botrytis cinerea. Crown gall of hemp is caused by Agrobacterium tumefaciens.