A characteristic is angiosperms is

Options

A. Flower
B. Root
C. Seed
D. All the above.

Answer

### Step-by-Step Solution:

1. **Understanding Angiosperms**: Angiosperms are commonly known as flowering plants. This is a fundamental characteristic that distinguishes them from other plant groups.

2. **Key Characteristics**: The primary characteristic of angiosperms is their ability to produce flowers. Flowers are the reproductive structures that facilitate the process of pollination and fertilization.

3. **Comparison with Gymnosperms**: Angiosperms can be distinguished from gymnosperms (non-flowering plants) by their ability to produce flowers. Gymnosperms do have seeds, but they do not produce flowers.

4. **Seeds with Endosperm**: Angiosperms produce seeds that contain endosperm, which provides nourishment to the developing embryo. This is another distinguishing feature, as gymnosperms do not have seeds with endosperm.

5. **Fruit Production**: Angiosperms also produce fruits that contain seeds. The fruit serves as a protective structure for the seeds and aids in their dispersal.

6. **Conclusion**: Among the characteristics discussed, the most defining feature of angiosperms is their ability to produce flowers. Therefore, the correct answer to the question is that a characteristic of angiosperms is their production of flowers.

### Final Answer:
The characteristic of angiosperms is their ability to produce flowers.

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