The term 'terror of Bengal' is used for

Options

A. Erythroxylum
B. Eichhornia
C. Echinus
D. Echidna.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Term**: The term "Terror of Bengal" refers to a specific plant that has caused significant ecological problems in Bengal's water bodies.

2. **Analyzing the Options**: The question provides several options. We need to evaluate each one to determine which plant is referred to as the "Terror of Bengal".

3. **Evaluating Erythroxylum**: The first option is Erythroxylum, specifically Erythroxylum coca, which is known for producing cocaine. This plant is native to South America and does not relate to the ecological issues in Bengal. Therefore, it is not the correct answer.

4. **Evaluating Echinoderms**: The second option is Echinoderms, which are marine animals. Since the question is about a plant, this option can also be ruled out.

5. **Evaluating Eicchornia**: The third option is Eicchornia, particularly Eicchornia crassipes (commonly known as water hyacinth). This plant is known for its rapid growth and ability to spread quickly in water bodies. It can cause significant harm to aquatic ecosystems by outcompeting native species and disrupting local biodiversity.

6. **Conclusion**: Given that Eicchornia crassipes was introduced to India for its attractive flowers but became a problematic invasive species, it is indeed referred to as the "Terror of Bengal". Thus, the correct answer is Eicchornia.

7. **Final Answer**: The term "Terror of Bengal" is used for Eicchornia (water hyacinth).

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