If flowering is either quantitatively or qualitatively dependent on exposure to low temperature, this phenomenon is termed as

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question states that flowering in some plants is dependent on low temperatures, either in a quantitative or qualitative manner. We need to identify the term that describes this phenomenon.

2. **Identifying the Phenomenon**: In botany, there is a specific term used to describe the requirement of low temperatures for flowering. This term is crucial for understanding how certain plants adapt to their environments.

3. **Defining Vernalization**: The phenomenon where flowering is promoted by exposure to low temperatures is known as "Vernalization." This process is essential for some plants to transition from vegetative growth to flowering.

4. **Importance of Vernalization**: Vernalization allows plants to prevent reproductive development too late in the growing season. It ensures that plants have enough time to mature before they flower, which is vital for their reproductive success.

5. **Conclusion**: Therefore, the phenomenon where flowering is dependent on exposure to low temperatures is termed "Vernalization."

**Final Answer**: Vernalization

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