Perennial plants which die soon after flowering and fruiting are known as :

Options

A. monocarpic
B. caudex
C. biennial
D. deliquescent

Explanation

To answer the question, "Perennial plants which die soon after flowering and fruiting are known as:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Perennial Plants**:
- Perennial plants are those that live for more than two years. They can flower and fruit multiple times throughout their life cycle.

2. **Identifying the Type of Perennial Plants in Question**:
- The question specifies perennial plants that die soon after flowering and fruiting. This indicates a specific category of perennial plants.

3. **Defining Monocarpic Plants**:
- Monocarpic plants are a subset of perennial plants that flower, produce seeds, and then die. They typically invest all their energy into a single reproductive event.

4. **Examples of Monocarpic Plants**:
- A common example of a monocarpic plant is the banana, which flowers and fruits once and then dies.

5. **Evaluating Other Options**:
- The other options provided (cordex, biennial, and deliquescent) do not fit the description:
- **Cordex** refers to a part of a plant, not a type of plant.
- **Biennial** plants live for two years, not fitting the definition of perennial.
- **Deliquescent** refers to a growth form of plants, not a type that dies after flowering.

6. **Conclusion**:
- Therefore, the correct answer to the question is that perennial plants which die soon after flowering and fruiting are known as **monocarpic plants**.

### Final Answer:
Perennial plants which die soon after flowering and fruiting are known as **monocarpic plants**.

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