Which of the following drug is extracted from the latex of poppy plant Papaver somniferum, generally taken by snorting and injection, is a depressant and slows down body functions?

Options

A. Cocaine
B. Hashish
C. Barbiturate
D. Heroin

Explanation

To solve the question regarding which drug is extracted from the latex of the poppy plant Papaver somniferum, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Source Plant**:
- The question specifies the drug is extracted from the latex of the poppy plant, specifically *Papaver somniferum*.

2. **Analyze the Options**:
- The options given are cocaine, hashish, barbiturates, and heroin. We need to determine which of these drugs is derived from *Papaver somniferum*.

3. **Evaluate Each Option**:
- **Cocaine**: This drug is derived from the coca plant (*Erythroxylum coca*), not from the poppy plant.
- **Hashish**: This is obtained from the cannabis plant and is not related to the poppy plant.
- **Barbiturates**: These are synthetic drugs used as sedatives and are not derived from any plant.
- **Heroin**: This drug is indeed derived from the latex of the poppy plant (*Papaver somniferum*).

4. **Consider the Method of Use**:
- The question states that the drug is generally taken by snorting and injection. Heroin is commonly used in these ways.

5. **Identify the Drug Classification**:
- The question mentions that the drug is a depressant that slows down body functions. Heroin is classified as an opioid depressant, which matches this description.

6. **Conclusion**:
- Based on the analysis, the drug that fits all the criteria mentioned in the question is **Heroin**.

### Final Answer:
The drug extracted from the latex of the poppy plant *Papaver somniferum*, generally taken by snorting and injection, which is a depressant and slows down body functions is **Heroin**.

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