Explain the role of hypocotyls in epigeal germination.

Explanation

**Step-by-Step Solution:**

1. **Definition of Hypocotyl**: The hypocotyl is the part of the embryo that lies between the cotyledons (seed leaves) and the radicle (the part that develops into the root). It plays a crucial role in the germination process.

2. **Understanding Epigeal Germination**: Epigeal germination is a type of seed germination where the cotyledons are pushed above the soil surface. This occurs after the seed absorbs water and swells, leading to the breaking of the seed coat.

3. **Initial Germination Process**: When the seed coat bursts, the first structure to emerge is the radicle, which develops into the primary root. This root anchors the plant and begins to absorb water and nutrients from the soil.

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