Bt toxin is obtained from

Options

A. Prokaryotes
B. Eukaryotes
C. Both (a) and (b)
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding BT Toxin**: BT toxin refers to a specific type of toxin that is produced by a bacterium. The full name of BT is Bacillus thuringiensis.

2. **Identifying the Source**: The BT toxin is produced by the bacterium Bacillus thuringiensis, which is a prokaryotic organism. Prokaryotes are single-celled organisms that lack a nucleus, and bacteria fall under this category.

3. **Function of BT Toxin**: The BT toxin is known for its insecticidal properties. It produces proteins that are toxic to certain insects, making it an effective biological pesticide.

4. **Application in Agriculture**: Due to its effectiveness in controlling pest populations, BT toxin is widely used in agriculture as a biological pesticide, helping to protect crops from insect damage.

5. **Conclusion**: Therefore, the correct answer to the question "Bt toxin is obtained from" is that it is obtained from prokaryotes, specifically from the bacterium Bacillus thuringiensis.

**Final Answer**: Bt toxin is obtained from prokaryotes (Bacillus thuringiensis).

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