Which of the following plants are monocarpic but perennial?

Options

A. Mango
B. Jackfruit
C. Bamboo species
D. Papaya

Explanation

To determine which plants are monocarpic but perennial, we need to understand the definitions of these terms and then analyze the options given.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Monocarpic Plants**: These are plants that flower and produce seeds only once in their lifetime. After flowering and seed production, they typically die.
- **Perennial Plants**: These are plants that live for more than two years. They can flower multiple times throughout their life (polycarpic) or just once (monocarpic).

2. **Identify the Characteristics**:
- We are looking for plants that are both monocarpic and perennial. This means they must have a long lifespan (more than two years) but only flower once before they die.

3. **Examples of Monocarpic Plants**:
- Common examples of monocarpic plants include bamboo species, agave, and certain types of palm trees. Bamboo is particularly noted for its long lifespan and monocarpic nature.

4. **Analyze the Options**:
- If the options provided include bamboo, then it is a suitable candidate because it flowers once after many years (typically 50-100 years) and then dies, fitting the criteria of being monocarpic and perennial.

5. **Conclusion**:
- Based on the definitions and examples, the correct answer to the question is the bamboo species, as it is a perennial plant that flowers only once in its lifetime.

### Final Answer:
The plant that is monocarpic but perennial is **bamboo species**.