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 solve the question regarding the direct development of an embryo from cells of the integument without involving meiosis and fertilization, we can follow these steps:

### Step-by-Step Solution

1. **Understand the Question**: The question asks for a term that describes the direct development of an embryo from integument cells without meiosis and fertilization.

2. **Identify Key Terms**: The key terms in the question are "direct development," "embryo," "integument," "without meiosis," and "without fertilization."

3. **Review the Options**: The options provided are:
- Sporophytic budding
- Diplospory
- Apospory
- Aplospory

4. **Analyze Each Option**:
- **Sporophytic Budding**: This process, also known as adventive embryony, involves the development of embryos from the cells of the nucellus or integument without meiosis or fertilization. This matches the description given in the question.
- **Diplospory**: Involves the formation of an unreduced embryo sac from the megaspore mother cell, which does not fit the question as it involves meiotic processes.
- **Apospory**: This refers to the formation of an embryo sac from a diploid somatic cell adjacent to the megaspore mother cell, which also does not match the question's criteria.
- **Aplospory**: This involves haploid egg formation, which again does not match the description provided.

5. **Conclusion**: Based on the analysis, the correct answer is **Sporophytic Budding**. This process allows for the direct development of an embryo from integument cells without the need for meiosis and fertilization.

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