Which of the following plant has become a water weed in this country-

Options

A. Typha
B. Trapa
C. Cyperus
D. Eichornia

Answer

To solve the question "Which of the following plant has become a water weed in this country?" we will analyze each of the given options: Taifa, Trapa, Thippurus, and Echornia.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are Taifa, Trapa, Thippurus, and Echornia.

2. **Analyze the First Option - Taifa**:
- Taifa is described as a monocotyledonous aquatic plant.
- It is an aquatic herb but is not classified as a weed.
- **Conclusion**: This option is incorrect.

3. **Analyze the Second Option - Trapa**:
- Trapa is known to be an aquatic floating plant found in India.
- It does not fit the definition of a weed.
- **Conclusion**: This option is also incorrect.

4. **Analyze the Third Option - Thippurus**:
- Thippurus is an aquatic flowering plant and is grass-like.
- It is not categorized as a weed.
- **Conclusion**: This option is incorrect as well.

5. **Analyze the Fourth Option - Echornia**:
- Echornia is commonly known as water hyacinth.
- It is referred to as the "Terror of Bengal" due to its invasive nature.
- This plant can rapidly reproduce and double its population in a very short time (5 to 15 days).
- It has caused significant disruption to natural ecosystems when introduced to new environments.
- **Conclusion**: This option is correct as Echornia has indeed become a water weed in India.

### Final Answer:
The plant that has become a water weed in this country is **Echornia** (water hyacinth).

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