.........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 A, B, and C based on our understanding of the process of microspore formation in plants.

### Step-by-Step Solution:

1. **Identify the Type of Cell (A)**:
- In the sporogenous mass found in the anther of flowering plants, the specific type of cell responsible for producing microspores is known as the **pollen mother cell** (PMC).
- **Answer for A**: Pollen mother cell

2. **Identify the Type of Cell Division (B)**:
- The pollen mother cell undergoes a specific type of cell division to produce microspores. This division is called **meiosis**, which is a reduction division that results in the formation of haploid cells.
- **Answer for B**: Meiosis

3. **Determine the Number of Functional Microspores (C)**:
- After the pollen mother cell undergoes meiosis, it produces a tetrad of microspores. When these microspores separate, they give rise to **four functional microspores**.
- **Answer for C**: 4

### Final Answers:
- A = Pollen mother cell
- B = Meiosis
- C = 4

### Complete Statement:
A pollen mother cell in sporogenous mass undergo meiosis to form a tetrad that on separation gives rise to 4 functional microspores.