Hypotensive tranquilliser drug reserpine is obtained from roots of
(a) Ferula asafoetida
(b) Rauwolfia serpentina
(c) Papaver somniferum
(d) Curcuma longa

Options

A. Ferula asafoetida
B. Rauwolfia serpentina
C. Papaver somniferum
D. Curcuma longa

Answer

To solve the question regarding which plant's roots the hypotensive tranquilizer drug reserpine is obtained from, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify the correct plant from which reserpine is derived. The options given are:
- (a) Ferula asafoetida
- (b) Rauwolfia serpentina
- (c) Papaver somniferum
- (d) Curcuma longa

2. **Identify Reserpine**: Reserpine is a type of alkaloid that is known for its use as an antihypertensive medication and an antipsychotic tranquilizer. It helps in reducing blood pressure and alleviating anxiety.

3. **Research the Plants**:
- **Ferula asafoetida**: This plant is known for producing asafoetida, a spice, and is not related to reserpine.
- **Rauwolfia serpentina**: This plant is known to be the source of reserpine. It is specifically recognized for its medicinal properties, including its use in treating hypertension.
- **Papaver somniferum**: This plant is primarily known for producing opiates, such as morphine, and is not related to reserpine.
- **Curcuma longa**: This plant is known for turmeric, which is used as a spice and has various health benefits, but it does not produce reserpine.

4. **Conclusion**: Based on the information gathered, the correct answer is (b) Rauwolfia serpentina, as it is the only plant listed that is known to contain reserpine.

### Final Answer:
(b) Rauwolfia serpentina

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