Ephedrine is obtained by :-

Options

A. Ephedra
B. Gnetum
C. Pinus
D. Cycas

Answer

To answer the question "Ephedrine is obtained by:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ephedrine**: Begin by recognizing that ephedrine is a medicinal compound. It is important to know its uses and significance in medicine.

2. **Identify the Source**: Determine the plant from which ephedrine is derived. This requires knowledge of botanical sources of medicinal compounds.

3. **Research the Plant**: The plant that produces ephedrine is known as **Ephedra**. This is a crucial piece of information as it directly answers the question.

4. **Classification of Ephedra**: To further understand Ephedra, we can classify it:
- **Family**: Ephedraceae
- **Order**: Ephedrales
This classification helps in remembering the characteristics of the plant.

5. **Geographical Distribution**: Ephedra species are found in various regions including South America, Southern Europe, Africa, and China. This knowledge can provide context about the plant's availability.

6. **Medicinal Uses**: Ephedra is traditionally used to prepare medicines that treat conditions such as asthma, common cold, and hay fever. This highlights the importance of the plant in traditional medicine.

7. **Conclusion**: Based on the information gathered, we conclude that ephedrine is obtained from the plant **Ephedra**.

### Final Answer:
Ephedrine is obtained by the plant **Ephedra**.

---