Name all the haploid cells present in an unfertilized mature embryo-sac of a flowering plant. Write the total number of cells in it.

Explanation

To answer the question about the haploid cells present in an unfertilized mature embryo sac of a flowering plant, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure of the Embryo Sac**:
- The mature embryo sac is a structure that develops within the ovule of flowering plants and is crucial for reproduction. It contains several cells and nuclei.

2. **Identifying the Total Number of Cells**:
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