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Question : What are transgenic plants ? Explain with any two examples. |
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Answer» SOLUTION :(1) The genetically engineered crop plants carrying desirable TRAITS are called transgenic plants. (2) Transgenic plants are disease RESISTANT, insect resistant and herbicide resistant. (3 ) Plants with greater photosynthetic activity, nitrogen fixing ABILITY, improved storage proteins and higher vitamin contents are transgenic plants. (4) Examples of transgenic plants: (i) Bt cotton (ii) Flavr savr tomato and (iii) Golden rice. (i) Bt Cotton : Bt cotton is a transgenic plant. Bt toxin gene has been cloned and introduced in many plants to provide resistance to insects without the need of insecticides. (ii) Flavr savr tomato : It is developed by introducing an additional copy of polygalactouronase. This type of tomato has a longer shelf life. (iii) Golden rice : It is a genetically engineered rice with higher beta carotene (provitamin A) content. |
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