The number of spores in the sporangium of fern is

Options

A. 64
B. 32
C. 128
D. 16

Answer

To determine the number of spores in the sporangium of a fern, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Structure**:
- Ferns belong to the group called pteridophytes. The main plant body of ferns is the sporophyte, which is the diploid phase of the plant.

2. **Identifying Sporophylls**:
- On the sporophyte, there are specialized leaves known as sporophylls. These leaves bear structures called sporangia.

3. **Sporangia and Spores**:
- Each sporangium contains spore mother cells (also known as sporocytes). These cells undergo meiosis to produce spores.

4. **Spores Characteristics**:
- The spores produced are haploid, meaning they contain half the number of chromosomes compared to the diploid sporophyte.

5. **Fixed Number of Spores**:
- The number of spores produced per sporangium is species-specific and is fixed for each type of fern.

6. **Maximum Number of Spores**:
- The highest number of spores that can be produced in a single sporangium of any fern species is 64.

7. **Conclusion**:
- Therefore, the answer to the question regarding the number of spores in the sporangium of a fern is 64.

### Final Answer:
The number of spores in the sporangium of fern is **64**.

---