CBSE Class 12 Biology — What is the primary use of Bt toxi

Q: What is the primary use of Bt toxin produced by Bacillus thuringiensis?

Bt toxin is produced by a bacterium called Bacillus thuringiensis. Bt toxin genes have been cloned from the bacteria and been expressed in plants to provide resistance to insects without the need for insecticides; in effect created a biopesticide. Examples include Bt cotton, Bt corn, etc.

CBSE · Class 12 · Biology · Biotechnology and its ApplicationsWhat is the primary use of Bt toxin produced by Bacillus thuringiensis?

Step-by-Step Solution

Bt toxin is produced by a bacterium called Bacillus thuringiensis. Bt toxin genes have been cloned from the bacteria and been expressed in plants to provide resistance to insects without the need for insecticides; in effect created a biopesticide. Examples include Bt cotton, Bt corn, etc.

Detailed Options Breakdown

Option : To kill bacteria

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Biotechnology and its Applications.

Option 1: To act as a biopesticide against insect pests (Correct Answer)

Correct choice. Refer to the step-by-step verified solution guidelines above for details.

Option 2: To enhance plant growth hormones

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Biotechnology and its Applications.

Option 3: To cure viral infections in plants

Incorrect choice. This distractor represents a common misunderstanding of the core principles of Biotechnology and its Applications.

💡 Study Guide: This question tests core syllabus concepts from Biotechnology and its Applications. For formulas, key summaries, and mock exam reference guides, read the full Biotechnology and its Applications Revision Notes.

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