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Genetic Engineering for Plant Resistance Quiz

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Genetic Engineering for Plant Resistance Quiz

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Questions and Answers

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?

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?

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?

There are more than 100 crystal protein encoding genes Signup and view all the answers

Which orders of insects are most susceptible to Bt toxins?

Lepidoptera, Coleoptera, Hymenoptera, Diptera, and Nematoda Signup and view all the answers

What is the main function of Bt toxin genes in plants?

To confer resistance against insect pests Signup and view all the answers

What is the mode of action of Bt Cry toxins?

They have to be ingested by the susceptible insect to cause mortality Signup and view all the answers

Which orders of insects are most susceptible to Bt toxins?

Lepidoptera, Coleoptera, Hymenoptera, Diptera, and Nematoda Signup and view all the answers

What is the role of crystal proteins (Cry toxins) in Bt strains?

To act as insecticidal proteins when ingested by susceptible insects Signup and view all the answers

What is the diversity of δ-endotoxins encoding genes in Bt strains?

More than 100 crystal protein encoding genes Signup and view all the answers

Genetic Engineering for Plant Resistance Quiz

Choose a study mode

Podcast

Questions and Answers

What is the main function of Bt toxin genes in plants?

What is the mode of action of Bt Cry toxins?

What is the role of crystal proteins (Cry toxins) in Bt strains?

What is the diversity of δ-endotoxins encoding genes in Bt strains?

Which orders of insects are most susceptible to Bt toxins?

What is the main function of Bt toxin genes in plants?

What is the mode of action of Bt Cry toxins?

Which orders of insects are most susceptible to Bt toxins?

What is the role of crystal proteins (Cry toxins) in Bt strains?

What is the diversity of δ-endotoxins encoding genes in Bt strains?

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