Wheat/rice grain is a fruit of the type

Options

A. Cypsela
B. Samara
C. Achene
D. Caryopsis

Answer

To determine the type of fruit that wheat and rice grains represent, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Type of Fruit**: Wheat and rice grains are classified as a specific type of fruit. They are not just any fruit; they belong to a category known as caryopsis.

2. **Define Caryopsis**: A caryopsis is a type of dry fruit that is characteristic of the Poaceae family (grasses). In this type of fruit, the seed is fused with the pericarp (the fruit wall), making it difficult to separate the seed from the fruit.

3. **Characteristics of Caryopsis**:
- **Dry and Small**: Caryopses are typically small and dry.
- **Derived from a Superior Ovary**: They develop from a single ovary, which is referred to as a monocarpillary ovary.
- **Indehiscent**: This means that the fruit does not split open at maturity to release the seed. Instead, the seed is retained within the pericarp until it is consumed or decomposes.

4. **Conclusion**: Based on the characteristics and definitions, we conclude that wheat and rice grains are indeed caryopses.

5. **Final Answer**: Therefore, the correct answer to the question is that wheat/rice grain is a fruit of the type **Caryopsis**.