Embryo sacs of some apomitic species appear normal but contain diploid cells. Suggest a suitable explanation for the condition.

Explanation

### Step-by-Step Solution:

1. **Understanding the Terms**:
- First, we need to clarify what is meant by "embryo sac" and "apomictic species". An embryo sac is the female gametophyte in flowering plants, and apomixis is a form of asexual reproduction that occurs through seeds without fertilization.

2. **Identifying the Condition**:
- The question states that the embryo sacs appear normal but contain diploid cells. Diploid cells are those that contain two sets of chromosomes (one from each parent).

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