Indicate the stages where meiosis and mitosis occur (1, 2 or 3 ) in the flow chart.
`"Megaspore mother cell"overset(1)rarr"Megaspores"overset(2)rarr"Embryo sac" overset(3)rarr"Egg"`

Explanation

To indicate the stages where meiosis and mitosis occur in the given flow chart, we will analyze each step of the process:

1. **Megaspore Mother Cell to Megaspores**:
- The megaspore mother cell is a diploid cell (2n). It undergoes meiosis to produce four haploid megaspores (n). Therefore, this stage involves **meiosis**.
- **Stage: 1 (Meiosis)**

2. **Megaspores to Embryo Sac**:
- The megaspores are haploid cells (n). They undergo mitotic divisions to form the embryo sac, which is also haploid. Therefore, this stage involves **mitosis**.
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