In embryophystes, sporogensis involves

Options

A. Microsporogenesis and megasporo-genesis
B. Formation of diploid spores
C. Formation of haploid spores
D. Formation of mitospores.

Answer

To answer the question "In embryophytes, sporogenesis involves," we will analyze the options provided and understand the process of sporogenesis in embryophytes step by step.

### Step-by-Step Solution:

1. **Understanding Sporogenesis**:
- Sporogenesis refers to the process of producing spores, which are reproductive cells that can develop into a new organism. In embryophytes (land plants), sporogenesis is crucial for reproduction.

2. **Types of Sporogenesis**:
- There are two main types of sporogenesis:
- **Microsporogenesis**: This is the formation of microspores, which develop into male gametophytes (pollen grains).
- **Megasporogenesis**: This is the formation of megaspores, which develop into female gametophytes (embryo sacs).

3. **Haploid and Diploid Spores**:
- Spores can be haploid or diploid:
- **Haploid Spores**: These are produced through meiosis from diploid spore mother cells (microspore mother cells and megaspore mother cells) and are characteristic of the gametophyte generation.
- **Diploid Spores**: These are not typically produced in embryophytes during sporogenesis; instead, the diploid phase is represented by the sporophyte generation.

4. **Sporangia**:
- Sporogenesis occurs in specialized structures called sporangia. Within the sporangia, sporogenous cells undergo meiosis to produce haploid spores.

5. **Correct Option**:
- Now, evaluating the options:
1. Microsporogenesis and Megasporogenesis - **Correct** (as both processes are involved in sporogenesis).
2. Formation of diploid spores - **Incorrect** (embryophytes primarily produce haploid spores).
3. Formation of haploid spores - **Correct** (this is the main outcome of sporogenesis in embryophytes).
4. Formation of mitospores - **Incorrect** (mitospores are not typically formed during sporogenesis).

- Therefore, the correct answer to the question is that sporogenesis in embryophytes involves **Microsporogenesis and Megasporogenesis** and the **formation of haploid spores**.

### Final Answer:
In embryophytes, sporogenesis involves **Microsporogenesis and Megasporogenesis** as well as the **formation of haploid spores**.