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Improvement in Food Resources — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceImprovement in Food Resources2 Marks
Question
How are diseases transmitted in crops?
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Answer

All viruses that spread within their host tissues (systemically) can be transmitted by grafting branches or buds from diseased plants on healthy plants. Most disease causing viruses are carried and transmitted naturally by insects and mites, which are called vectors of the virus.

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