Thiourea is used in overcomin seed dormancy by

Options

A. Chemichal scarification
B. Counteracting ihibitors
C. Inducing cell division
D. Develop osmotic pressure.

Answer

**Step-by-Step Solution:**

1. **Understanding Seed Dormancy**: Seed dormancy is a state in which seeds are prevented from germinating even under favorable conditions. This can be due to various factors, including the presence of growth inhibitors.

2. **Role of Thiourea**: Thiourea is a chemical compound that is used to overcome seed dormancy. It works by interacting with the inhibitors present in the seeds.

3. **Identifying Inhibitors**: Seeds contain various growth inhibitors such as Abscisic Acid (ABA) and ethylene, which play a significant role in maintaining dormancy. These inhibitors prevent the seed from germinating.

4. **Mechanism of Action**: Thiourea helps in dissolving these inhibitors. By breaking down or reducing the concentration of these growth inhibitors, thiourea facilitates the germination process.

5. **Conclusion**: Therefore, the correct answer to the question is that thiourea is used in overcoming seed dormancy by **contracting inhibitors** present in the seeds.

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