Match List-I with List-II and select the correct answer:
| List-I (Diseases) | List-II (Causative agents) |
| a. "Fire blight" of apple and pear | 1. Pseudomonas solanacearum |
| b. "Crown gall" of tomato | 2. Pseudomonas cirri |
| c. "Citrus canker" | 3. Bacterium tumefaciens |
| d. "Brown rot" of Solanaceae | 4. Bacillus amylovorus |
A. a-4, b-3, c-2, d-1
B. a-2, b-1, c-4, d-3
C. a-1, b-2, c-3, d-4
D. a-3, b-4, c-1, d-2
Answer: Option A
Related Questions on Plant Anatomy and Physiology
A. Cinnamomum - Amoora association
B. Bischofia - Dillenia association
C. Shorea - Lagerstroemia association
D. Mesua - Michelia association
Which of the following react with haemoglobin, forming methemoglobin which will not take up oxygen?
A. Nitrates
B. Nitrites
C. Carbides
D. Oxides
Internally, hydathode shows a group of loosely arranged parenchymatous cells called as
A. Epiderm
B. Epithelium
C. Ampithecium
D. Epithem

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