Direct development of embryo from cells of integument without involving meiosis and fertilization is called

Options

A. Sporophytic budding
B. Diplospory
C. Apospory
D. Aplospory

Answer

To answer the question, "Direct development of embryo from cells of integument without involving meiosis and fertilization is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a specific process where an embryo develops directly from the integument cells of an ovule without the involvement of meiosis or fertilization.

2. **Identifying Key Terms**:
- **Integument**: These are the protective layers surrounding the ovule in flowering plants.
- **Embryo Development**: The process by which an embryo forms from specific cells.

3. **Recognizing the Process**: The process described in the question is a form of asexual reproduction where the embryo develops from the integument cells directly.

4. **Identifying the Correct Term**: The term that describes this specific process is **sporophytic budding**. This term indicates that the embryo arises from the sporophyte tissue (in this case, the integument) without the need for fertilization or meiosis.

5. **Eliminating Incorrect Options**:
- **Diplosporine**: This refers to a type of apomixis where the embryo develops from the microspore mother cell, which is not the case here.
- **Apospory**: This involves the development of a gametophyte from non-reproductive cells, which is also not relevant to the question.
- **Apilospory**: This is another term related to gametophyte development and does not apply here.

6. **Conclusion**: Based on the understanding and elimination of incorrect options, the correct answer is **sporophytic budding**.

### Final Answer:
The direct development of an embryo from cells of integument without involving meiosis and fertilization is called **sporophytic budding**.