why is vivipary an undesirable character for annual crop plants?

Options

A. It reduces vigor of the plant .
B. It adversely affects the fertility of plant .
C. The seeds exhibit long dormancy .
D. The seeds cannot be stored under normal conditions for next season .

Answer

### Step-by-Step Solution:

1. **Definition of Vivipary**:
- Vivipary is a condition where seeds germinate while still attached to the parent plant, rather than falling to the ground and undergoing dormancy before germination.

2. **Impact on Seed Storage**:
- In annual crop plants, seeds need to be stored for the next planting season. However, if seeds germinate while still on the plant, they cannot be harvested and stored effectively. This leads to a loss of potential future crops.

3. **Consequences for Annual Crops**:
- Annual crops are typically grown for a single growing season and need to produce seeds that can be stored for the next season. If vivipary occurs, it reduces the number of viable seeds available for planting in the future.

4. **Additional Factors**:
- Vivipary can also lead to reduced vigor and fertility of the plants, as the energy and resources may be diverted towards supporting germinating seeds rather than growing healthy plants.

5. **Conclusion**:
- Therefore, vivipary is considered an undesirable trait for annual crop plants because it prevents effective seed storage for future planting, ultimately affecting crop yield and sustainability.