Plant seeds when sown in soil , germinate and come out of it , due to

Options

A. Turgour pressure
B. Imbibition pressure
C. Osmotic pressure
D. Atmospheric pressure

Answer

**Step-by-Step Solution:**

1. **Understanding Seed Germination**: When seeds are sown in soil, they undergo a process known as germination. This process involves the seed absorbing water and beginning to grow.

2. **Role of Water**: For germination to occur, seeds need to take in water. This water absorption is crucial as it activates the metabolic processes necessary for growth.

3. **Imbibition Process**: The specific process through which seeds absorb water is called imbibition. Imbibition is the process where seeds take up water from the surrounding environment (soil) and swell.

4. **Pressure Generation**: As the seeds absorb water, they swell and create a pressure known as imbibition pressure. This pressure is significant because it helps push the seed coat apart, allowing the embryonic plant to emerge from the seed.

5. **Conclusion**: Therefore, the reason plant seeds germinate and come out of the soil is primarily due to imbibition pressure, which facilitates the absorption of water and the subsequent growth of the plant.

**Final Answer**: Plant seeds when sown in soil germinate and come out of it due to imbibition pressure.

---