.........A.......( a type of cell ) in sporogenous mass undergo ........B...... ( a type of cell division ) to from a tetrad that on separation given rise to ........C ...... ( number ) functional microspore /s.

Options

A. `{:(A,B,C),("Pollen mother cell","Meiosis",4):}`
B. `{:(A,B,C),("Pollen mother cell","Meiosis",1):}`
C. `{:(A,B,C),("Megaspore mother cell","Meiosis",4):}`
D. `{:(A,B,C),("Megaspore mother cell","Meiosis",1):}`

Answer

To solve the question step by step, we need to fill in the blanks with the appropriate terms based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Identifying the Type of Cell (A)**:
- In the sporogenous mass, the type of cell that is present is known as the **Pollen Mother Cell** (PMC). This cell is responsible for producing microspores.

**Answer for A**: Pollen Mother Cell

2. **Identifying the Type of Cell Division (B)**:
- The Pollen Mother Cell undergoes a specific type of cell division to produce microspores. This type of division is called **Meiosis**. Meiosis is a reduction division that results in the formation of haploid cells from a diploid cell.

**Answer for B**: Meiosis

3. **Identifying the Number of Functional Microspores (C)**:
- After the Pollen Mother Cell undergoes meiosis, it forms a structure known as a **Tetrad**, which consists of four microspores. Upon separation, these four microspores become functional microspores.

**Answer for C**: 4

### Final Answers:
- A: Pollen Mother Cell
- B: Meiosis
- C: 4