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प्रश्न
Why was biotechnology required to develop nematode resistance in tobacco plants?
विकल्प
Because nematodes are immune to natural defences
Because natural resistance to these nematodes does not naturally occur in most crops
Because tobacco naturally attracts nematodes
Because biotechnology is always required for crop improvement
MCQ
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उत्तर
Natural resistance to root-knot nematodes like Meloidogyne incognita does not naturally occur in most crops including tobacco. Therefore, biotechnology and genetic engineering techniques such as RNAi are required to introduce artificial resistance mechanisms into these crops to protect them from nematode damage.
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