Which one of the following is a true nut ?

Options

A. Cashewnut
B. Groundnut
C. Cocunut
D. Areca nut

Answer

To determine which of the options is a true nut, we need to analyze the characteristics of each option based on the definition of a true nut.

### Step-by-Step Solution:

1. **Understanding True Nuts**:
- A true nut is a type of fruit that is simple, dry, and indehiscent.
- Indehiscent means that the fruit does not open at maturity to release its seeds.

2. **Evaluating the Options**:
- **Cashew Nut**:
- The cashew nut is a simple, dry fruit and is indehiscent.
- Therefore, it qualifies as a true nut.
- **Coconut**:
- The coconut is classified as a drupe, which has a fleshy endocarp.
- Since it is not dry, it does not qualify as a true nut.
- **Areca Nut**:
- The areca nut is categorized as a berry, which also has a fleshy composition.
- Thus, it does not meet the criteria for a true nut.
- **Groundnut**:
- The groundnut is a legume, which opens to release its seeds when mature.
- Therefore, it cannot be classified as a true nut.

3. **Conclusion**:
- Based on the analysis, the only option that meets the criteria of a true nut is the **cashew nut**.

### Final Answer:
The true nut among the options is the **cashew nut**.

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