The force exerted by a seedling as it pushes through the soil is not directly due to pressure created inside cells. While cell pressure does play a role, the primary force is generated by cell elongation and expansion.

Here's how it works:

* Cell elongation: Seedlings have specialized cells called coleoptiles (in grasses) or radicles (in most other plants) that have the ability to elongate significantly. This elongation is driven by the growth of cell walls.

* Cell expansion: As the cells elongate, they also expand in volume, pushing against the surrounding soil particles. This expansion is facilitated by water uptake into the cells, which increases internal turgor pressure.

* Turgor pressure: While cell pressure (turgor pressure) does contribute to the force, it's not the main driver. The pressure created by the expanding cells is more of a consequence of the elongation and expansion, rather than the primary force itself.

In summary:

The force exerted by a seedling is primarily due to:

1. Cell elongation: Cells grow longer, pushing against the soil.

2. Cell expansion: Cells increase in volume, further increasing the pressure on the soil.

While turgor pressure contributes, it's a secondary effect of cell elongation and expansion.