Multiple choice

Match the column – I (disease) with column – II (caused by) and select the correct option.

 
Column – I
Column – II
A. Bacterial speck of tomato 1. Pseudomonas syringae
B. Powdery mildew of barley 2. Blumeria graminis
C. Citrus canker 3. Xanthomonas axonopodis
D. Angular leaf spot of cotton 4. Xanthomonas campestris

  1. A - 1, B - 2, C - 3, D - 4

  2. A - 2, B - 3, C - 4, D - 1

  3. A - 4, B - 2, C - 1, D - 3

  4. A - 3, B - 2, C - 4, D - 1

  5. A - 4, B - 3, C - 2, D - 1
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct answer. Bacterial speck of tomato is caused by Pseudomonas syringae. Powdery mildew is a fungal disease of barley caused by Blumeria graminis. Citrus canker is a disease affecting Citrus species caused by the bacterium Xanthomonas axonopodis. Angular leaf spot of cotton is caused by Xanthomonas campestris.

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