Define the term “hard seed.”

The term "hard seed" refers to seeds that do not absorb water and therefore do not germinate, even when conditions are favorable. This characteristic is primarily due to a tough, impermeable seed coat that prevents moisture from entering the seed. As a result, hard seeds can remain dormant in the soil for extended periods until specific environmental conditions are met—such as physical abrasion or chemical exposure that breaks down the seed coat. This allows the seed to take up water and begin the germination process once the conditions are suitable.

Understanding this definition is crucial for anyone involved in agriculture or horticulture, as it affects planting strategies and the management of crop expectations. It also highlights the importance of seed preparation and the conditions under which specific seed types can be successfully cultivated.