To determine the correct answer regarding the life cycle stages of the tomato plant, let's analyze the information provided:
- Last month, the tomato plant grew but did not have flowers, indicating it was likely in the **seedling stage** (as it is still immature and not yet producing flowers).
- This month, the plant produces flowers and fruit, which means it has reached the **mature plant stage**.
Based on this analysis, the correct response is:
**Last month, the plant was a seedling. This month, the plant is a mature plant.**