Which of the following is not correct about the alkaloid obtained from the papaver somniferum plant?

Options

A. Theses are opiods drugs, binds to specific opioid receptors present in out brain and gastrointestinal tract.
B. Herion is chemically diacetylmorphine and is commonly called smack.
C. It is taken by snorting and injection.
D. It is a CNS stimulant which also causes hallucinations.

Answer

To solve the question regarding the alkaloid obtained from the Papaver somniferum plant, we will analyze each statement provided and determine which one is incorrect.

### Step-by-Step Solution:

1. **Identify the Alkaloid**:
The primary alkaloids obtained from the Papaver somniferum (poppy) plant are morphine and codeine. These compounds are known for their effects on the central nervous system.

**Hint**: Remember that the Papaver somniferum plant is commonly known as the opium poppy, which produces various alkaloids.

2. **Evaluate the Statements**:
- **Statement 1**: "These are opioids."
- This statement is correct. Opioids are substances that bind to opioid receptors in the brain and are derived from opium, which comes from the poppy plant.

**Hint**: Opioids are a class of drugs that include both natural and synthetic substances derived from opium.

- **Statement 2**: "Heroin is chemically diacetylmorphine and is commonly called SMEC."
- This statement is also correct. Heroin is indeed chemically known as diacetylmorphine and is often referred to by the slang term "SMEC."

**Hint**: Look for the chemical structure of heroin to understand its derivation from morphine.

- **Statement 3**: "It is generally taken by snorting or you can take injection."
- This statement is correct as well. Heroin can be administered through various routes, including snorting and injection.

**Hint**: Consider the common methods of drug administration when evaluating this statement.

- **Statement 4**: "It does not work as a stimulant; it generally works as a depressant."
- This statement is incorrect. While opioids like morphine and heroin are primarily depressants, the wording can be misleading. The statement implies a contradiction about the nature of the drug's effects.

**Hint**: Remember the classification of drugs based on their effects on the central nervous system (CNS).

3. **Conclusion**:
After evaluating all statements, the fourth statement is the one that is not correct regarding the alkaloid obtained from the Papaver somniferum plant.

### Final Answer:
The incorrect statement about the alkaloid obtained from the Papaver somniferum plant is the fourth statement.