Bt toxin is obtained from:

Options

A. prokaryotes
B. eukaryotes
C. both(1)and(2)
D. none of these

Answer

To solve the question "Bt toxin is obtained from:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Bt Toxin**:
- Bt toxin is a specific type of toxin that is known for its insecticidal properties. It is particularly effective against certain herbivorous insects.

2. **Identifying the Source**:
- The source of Bt toxin is a bacterium named *Bacillus thuringiensis*. This bacterium is known for producing the Bt toxin naturally.

3. **Classifying the Organism**:
- *Bacillus thuringiensis* is classified as a prokaryote. Prokaryotes are organisms that lack a defined nucleus and membrane-bound organelles. They include bacteria and archaea.

4. **Evaluating the Options**:
- The question provides four options: prokaryotes, eukaryotes, both 1 and 2, and none of these. Since Bt toxin is derived from a bacterium (which is a prokaryote), the correct answer must be prokaryotes.

5. **Final Answer**:
- Therefore, the answer to the question "Bt toxin is obtained from:" is **prokaryotes**.