A monocarpic plant is
(a) Cuscuta
(b) Agave
(c) Mangifera
(d) Dalbergia

Options

A. Cuscuta
B. Agave
C. Mangifera
D. Dalbergia

Answer

To determine which of the given plants is a monocarpic plant, we need to understand the definition of monocarpic plants and analyze the options provided.

### Step-by-Step Solution:

1. **Understand the Definition of Monocarpic Plants**:
- Monocarpic plants are those that flower, produce fruits, and then die after their reproductive cycle is complete. They typically do this only once in their lifetime.

2. **Analyze the Options**:
- **(a) Cuscuta**: This is a parasitic plant that does not follow the monocarpic life cycle.
- **(b) Agave**: Agave is known to be a monocarpic plant. It flowers once after many years (often decades), produces seeds, and then dies.
- **(c) Mangifera**: This refers to mango trees, which are perennial and can flower and fruit multiple times throughout their life.
- **(d) Dalbergia**: This is a genus of trees (like rosewood) that also flowers and fruits multiple times in its lifespan.

3. **Identify the Correct Answer**:
- Based on the definitions and analysis, the only monocarpic plant among the options is **(b) Agave**.

### Final Answer:
The correct answer is **(b) Agave**.