In sporophytic polyembryony, the additional embryos develops from

Options

A. Nucellus
B. Integument
C. First formed embryo
D. All the above.

Answer

To solve the question regarding sporophytic polyembryony and the development of additional embryos, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding Polyembryony**:
- Polyembryony refers to the phenomenon where more than one embryo develops from a single fertilized egg or seed. This can occur in various plant species.

2. **Types of Polyembryony**:
- There are different types of polyembryony:
- **Adventitious Polyembryony**: In this type, additional embryos arise from the nucellus (the central part of the ovule).
- **Gametophytic Polyembryony**: Here, more than one embryo forms from the integument (the outer layer of the ovule).
- **Sporophytic Polyembryony**: This is characterized by the development of additional embryos from the sporophyte tissue.

3. **Identifying the Source of Additional Embryos**:
- In sporophytic polyembryony, the additional embryos can develop from:
- The **nucellus** (the tissue inside the ovule).
- The **integument** (the protective layer surrounding the ovule).
- The **first formed embryo** (the initial embryo that develops).

4. **Conclusion**:
- Since additional embryos can arise from all the mentioned sources (nucellus, integument, and the first formed embryo), the correct answer to the question is **"all of the above."**

### Final Answer:
The additional embryos in sporophytic polyembryony develop from **all of the above**: nucellus, integument, and the first formed embryo.

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