If a typical angiospermic anther has 25 microspore mother cells in its each sporangium, calculate the total number of microspore tetrads, pollen grains and male gametes respectively produced by this anther.

Options

A. `25,100,200`
B. `100, 400, 800`
C. `100, 100, 400`
D. `50, 200, 400`

Answer

To solve the problem, we need to calculate the total number of microspore tetrads, pollen grains, and male gametes produced by an anther that contains 25 microspore mother cells in each sporangium.

### Step-by-Step Solution:

1. **Understanding Microspore Mother Cells**:
- Each microspore mother cell (also known as microsporocyte) undergoes meiosis to produce four microspores.
- Therefore, if there are 25 microspore mother cells, the total number of microspores produced will be:
\[ \text{Total Microspores} = 25 \text{ microspore mother cells} \times 4 = 100 \text{ microspores} \]

2. **Calculating Microspore Tetrads**:
- Since each microspore mother cell produces one tetrad (which consists of four microspores), the number of microspore tetrads is equal to the number of microspore mother cells:
\[ \text{Microspore Tetrads} = 25 \]

3. **Calculating Pollen Grains**:
- Each microspore develops into a pollen grain. Therefore, the total number of pollen grains produced is equal to the total number of microspores:
\[ \text{Pollen Grains} = 100 \]

4. **Calculating Male Gametes**:
- Each pollen grain contains two male gametes. Thus, the total number of male gametes produced is:
\[ \text{Male Gametes} = 100 \text{ pollen grains} \times 2 = 200 \text{ male gametes} \]

### Summary of Results:
- Microspore Tetrads: 25
- Pollen Grains: 100
- Male Gametes: 200

### Final Answer:
- Microspore Tetrads: 25
- Pollen Grains: 100
- Male Gametes: 200