In Citrus and Mango varieties ___(A)___ cells of maternal sporophyte of ovule start dividing and develop into the embryos.
Find the "A" :

Options

A. Integumentary cells
B. Nucellar cells
C. MMC
D. Embryosac

Answer

To solve the question, we need to identify the correct term that fits in the blank (A) regarding the development of embryos in Citrus and Mango varieties.

### Step-by-Step Solution:

1. **Understanding the Context**: The question refers to the process in which certain cells of the maternal sporophyte of the ovule in Citrus and Mango varieties start dividing to develop into embryos.

2. **Identifying Key Terms**: We need to focus on the terms related to the development of embryos from the ovule. The options provided are:
- Integumentary
- New cellar
- Microspore mother cell
- Embryo cell

3. **Analyzing the Options**:
- **Integumentary**: This refers to the outer layer of the ovule and does not directly develop into embryos.
- **Microspore mother cell**: This is involved in the formation of pollen grains, not embryos.
- **Embryo cell**: This term is too vague and does not specifically refer to the cells that develop into embryos in this context.
- **New cellar**: This refers to the cells of the nucellus, which can differentiate and develop into embryos in certain conditions.

4. **Conclusion**: Based on the information provided in the video transcript, it is clear that in Citrus and Mango, it is the **new cellar cells** of the maternal sporophyte of the ovule that start dividing and develop into embryos. This phenomenon is known as Adventive Embryony.

Thus, the answer to fill in the blank (A) is **new cellar**.

### Final Answer:
In Citrus and Mango varieties, **new cellar** cells of maternal sporophyte of ovule start dividing and develop into the embryos.

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