Discussion
Match the name of the disease with the causal organism.
| Disease | Causal organism |
|---|---|
| P. Black rot of sugarcane | 1. Cercospora personata |
| Q. Stem rot of jute | 2. Macrophomina phaseolina |
| R. Tikka disease of groundnut | 3. Ceratocystis adiposa |
| S. Crown gall of grapes | 4. Synchytrium endobioticum |
| 5. Agrobacterium tumefaciens | |
| 6. Colletotrichum corchorum |
Answer: C
The correct match is P-3, Q-2, R-1, S-5.
- Black rot of sugarcane is caused by Ceratocystis adiposa (P-3).
- Stem rot (charcoal rot) of jute is caused by Macrophomina phaseolina (Q-2).
- Tikka (leaf spot) disease of groundnut is caused by Cercospora, including C. personata (R-1).
- Crown gall of grapes is caused by Agrobacterium tumefaciens (S-5).
Synchytrium endobioticum causes wart disease of potato and Colletotrichum corchorum causes anthracnose of jute, so options using 4 or 6 are wrong, and A and B misplace the Cercospora and Macrophomina diseases.
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