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What is the main function of Bt toxin genes in plants?
What is the main function of Bt toxin genes in plants?
- To improve the plant's tolerance to drought
- To confer resistance to certain insects (correct)
- To increase the plant's photosynthetic efficiency
- To enhance the plant's growth rate
What is the mode of action of Bt Cry toxins?
What is the mode of action of Bt Cry toxins?
- They have to be ingested by the susceptible insect to cause mortality (correct)
- They act upon contact with the insect's exoskeleton
- They penetrate the insect's skin to cause mortality
- They are inhaled by the insect to cause mortality
What is the role of crystal proteins (Cry toxins) in Bt strains?
What is the role of crystal proteins (Cry toxins) in Bt strains?
- They act as a defense mechanism against fungal diseases
- They become active after being ingested by susceptible insects (correct)
- They become active upon contact with the insect's skin
- They are harmful to beneficial insects, mammals, and humans
What is the diversity of δ-endotoxins encoding genes in Bt strains?
What is the diversity of δ-endotoxins encoding genes in Bt strains?
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Which orders of insects are most susceptible to Bt toxins?
Which orders of insects are most susceptible to Bt toxins?
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What is the main function of Bt toxin genes in plants?
What is the main function of Bt toxin genes in plants?
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What is the mode of action of Bt Cry toxins?
What is the mode of action of Bt Cry toxins?
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Which orders of insects are most susceptible to Bt toxins?
Which orders of insects are most susceptible to Bt toxins?
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What is the role of crystal proteins (Cry toxins) in Bt strains?
What is the role of crystal proteins (Cry toxins) in Bt strains?
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What is the diversity of δ-endotoxins encoding genes in Bt strains?
What is the diversity of δ-endotoxins encoding genes in Bt strains?
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