Flowering dependent on low temperature exposure is

Options

A. Vernalisation
B. Thermotropy
C. Cryoscopy
D. Cryostat

Answer

To solve the question "Flowering dependent on low temperature exposure is," we will analyze the options provided and identify the correct term.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a term that describes the phenomenon where flowering in plants is influenced by exposure to low temperatures.

2. **Reviewing the Options**:
- **Option A: Vernalization**: This term refers to the process where certain plants require a period of cold temperatures to induce flowering.
- **Option B: Thermotropy**: This term describes the movement of plants in response to temperature, either towards or away from heat. It does not relate to flowering.
- **Option C: Cryoscopy**: This is a method used to determine the freezing points of substances and is not related to flowering.
- **Option D: Cryostat**: This is an apparatus used to maintain low temperatures for samples, but it does not refer to the biological process of flowering.

3. **Identifying the Correct Answer**: Based on the definitions:
- Vernalization is specifically the process that involves low temperature exposure leading to flowering in certain plants, particularly biennials and perennials. Therefore, the correct answer is **Vernalization**.

### Final Answer:
The correct term for flowering dependent on low temperature exposure is **Vernalization**.

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