Multiple choice

Match the plant diseases in List I with their casual organisms in List II.

 
List I (Plant diseases) List II (Casual organisms)
1. Loose smut of wheat a. Xylella fastidiosa
2. White rust of crucifers b. Agrobacterium tumefaciens
3. Crown gall c. Ustilago tritici
4. Pierce's disease d. Albugo candida

  1. 1 - a, 2 - b, 3 - c, 4 - d

  2. 1 - c, 2 - d, 3 - b, 4 - a

  3. 1 - c, 2 - b, 3 - a, 4 - d

  4. 1 - b, 2 - c, 3 - d, 4 - a
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Loose smut of wheat is caused by Ustilago tritici (1-c). White rust of crucifers is caused by Albugo candida (2-d). Crown gall is caused by Agrobacterium tumefaciens (3-b). Pierce's disease of grape is caused by Xylella fastidiosa (4-a). Option B matches all pairings correctly.

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