Chromoplasts are formed from leucoplasts in

Options

A. Rose petals
B. Carrot
C. Dahlia florets
D. All the above

Answer

To answer the question "Chromoplasts are formed from leucoplasts in:", we will analyze the options provided and understand the relationship between chromoplasts and leucoplasts.

### Step-by-Step Solution:

1. **Understanding Chromoplasts and Leucoplasts**:
- Chromoplasts are colored plastids that contain pigments such as carotenoids, which give color to various parts of plants.
- Leucoplasts are colorless plastids primarily involved in the storage of starches, oils, and proteins.

2. **Formation of Chromoplasts**:
- Chromoplasts can develop from leucoplasts, particularly when the plant part requires pigmentation for processes such as attracting pollinators or seed dispersers.

3. **Analyzing the Options**:
- **Option 1: Rose petals** - While rose petals contain chromoplasts, they typically do not form from leucoplasts.
- **Option 2: Carrot** - Carrots are known to have chromoplasts that are derived from leucoplasts, as they contain carotene, which gives them their orange color.
- **Option 3: Dahlia florets** - Similar to roses, dahlias have chromoplasts but do not primarily derive them from leucoplasts.
- **Option 4: All of the above** - This option suggests that all the previous options are correct, which is not the case since only carrots are specifically known for this transformation.

4. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2: Carrot**, as chromoplasts in carrots are formed from leucoplasts.

### Final Answer:
**Chromoplasts are formed from leucoplasts in: Option 2, Carrot.**

---