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Question

Which of the following micro-organisms can cause diseases in plants?

  1. Fungi
  2. Bacteria
  3. Viruses

  1. Intercropping

  2. Mixed cropping

  3. Crop rotation

  4. None of these


Solution

The correct option is D

None of these


Diseases in plants can be caused by fungi, bacteria and viruses.
For example, wheat rust is fungal in origin, yellow vein mosaic of okra is caused by virus and citrus canker is a disease affecting citrus species caused by the bacterium Xanthomonas axonopodis.

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