List the charges that occur when an ovule matures into seed.

Explanation

To answer the question about the changes that occur when an ovule matures into a seed, we can break down the process into several key changes:

1. **Integuments Harden**: The integuments, which are the protective layers surrounding the ovule, harden and transform into a tough protective seed coat. This seed coat protects the developing embryo and seed from environmental factors.

2. **Micropyle Reduction**: The micropyle, which is the small opening in the ovule, becomes smaller as the ovule matures into a seed. This change helps in the protection of the seed and regulates the entry of water during germination.

3. **Decrease in Water Content**: As the ovule matures, the water content within the seed decreases significantly, typically by about 10 to 15 percent. This reduction in moisture is crucial for seed longevity and dormancy.

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