Pyrethrin is extracted from

Options

A. Azadinachta indica
B. Chrysanthernum cinerarifolirum
C. Urtica dioca
D. Tagetus erecta

Answer

**Step-by-Step Solution:**

1. **Understanding Pyrethrin**: Pyrethrin is a natural insecticide that is known for its effectiveness in repelling and killing insects. It is derived from certain plants.

2. **Identifying the Source**: Pyrethrin is specifically extracted from the flowers of the plant *Chrysanthemum cinerariifolium*. This plant is known for its high concentration of pyrethrins.

3. **Recognizing the Options**: The question provides a list of options to choose from. Among these, we need to identify which one corresponds to the source of pyrethrin.

4. **Analyzing the Options**:
- Aza
- Dinesta
- Indica
- Charisthen
- Thernum
- Cinera (this seems to be a misspelling of *Cinerariifolium*)
- Rifolirium
- Urtica
- Deoca
- Tegasetus
- Erecta

5. **Selecting the Correct Answer**: The correct option that refers to the source of pyrethrin is *Cinerariifolium*, which is commonly recognized as *Chrysanthemum cinerariifolium*. Therefore, the correct answer is option B.

**Final Answer**: Pyrethrin is extracted from *Chrysanthemum cinerariifolium*.

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