Select a plant in which presence of certain chemical compounds inhibit germination.

Options

A. Potato
B. Cabbage
C. Tomato
D. Carrot

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for a plant in which the presence of certain chemical compounds inhibits germination.

2. **Review the Options**: The options given are potato, cabbage, tomato, and carrot. We need to analyze each option to determine which plant has a chemical compound that inhibits germination.

3. **Research Plant Growth Regulators (PGRs)**: Understand that Plant Growth Regulators (PGRs) are chemicals that can regulate various aspects of plant growth, including germination. Some PGRs promote growth, while others inhibit it.

4. **Examine Each Plant**:
- **Potato**: Generally, potatoes do not have a specific PGR that inhibits germination.
- **Cabbage**: Cabbage also does not have a known PGR that inhibits germination.
- **Carrot**: Similar to the above, carrots do not have a specific compound known for inhibiting germination.
- **Tomato**: Tomatoes are known to contain abscisic acid (ABA), a PGR that inhibits seed germination.

5. **Identify the Inhibitory Compound**: The specific compound in tomatoes that inhibits germination is abscisic acid (ABA). This compound plays a crucial role in maintaining seed dormancy and regulating stress responses in plants.

6. **Conclusion**: Based on the analysis, the correct answer is **tomato**, as it contains abscisic acid, which inhibits germination.

**Final Answer**: The plant in which the presence of certain chemical compounds inhibits germination is **tomato**.

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