Rye has two kinds of varieties: autumn and spring varieties. The correct statement about them is

Options

A. Spring variety is harvested in spring while the autumn variety is harvested in autumn
B. Spring variety dies in spring while the autumn variety dies in autumn
C. Spring variety is planted in spring while the autumn variety is planted in autumn
D. Spring variety is grown in tropical countries while the autumn variety is grown in temperature countries

Answer

To solve the question regarding the two varieties of rye (autumn and spring), we will analyze the characteristics and differences between these two varieties step by step.

### Step 1: Understanding the Varieties
Rye has two main varieties:
- **Autumn (Winter) Variety**: This variety is planted in the autumn season.
- **Spring Variety**: This variety is planted in the spring season.

**Hint**: Identify the planting seasons for both varieties to understand their growth patterns.

### Step 2: Growth and Development
- **Autumn Variety**: After being planted in autumn, this variety develops slowly into small seedlings over the winter months. It requires a period of cold (vernalization) to trigger flowering. When spring arrives, the plant resumes growth and continues to develop until it is harvested in mid-summer.

- **Spring Variety**: This variety is planted in spring and completes its entire life cycle (flowering, reproduction, and maturity) within the growing season. It does not require a cold period for flowering.

**Hint**: Consider how temperature influences the growth and flowering of each variety.

### Step 3: Flowering Patterns
- The **Autumn Variety** relies on low temperatures for flowering, which is a phenomenon known as vernalization. This means that it requires exposure to cold temperatures for a certain period to initiate the flowering process.

- The **Spring Variety** does not depend on low temperatures and can flower based on the warmer conditions of spring.

**Hint**: Think about how environmental conditions affect flowering in plants.

### Step 4: Harvesting Time
- The **Autumn Variety** is harvested around mid-summer after it has grown through the winter and spring.

- The **Spring Variety** is harvested at the end of the growing season after it has completed its life cycle in the spring and summer.

**Hint**: Note the differences in harvesting times based on when each variety is planted.

### Conclusion
Based on the analysis, the correct statement about the two varieties of rye is that:
- The **Spring Variety** is planted in spring and completes its life cycle within that season, while the **Autumn Variety** is planted in autumn, requires cold for flowering, and is harvested in mid-summer.

### Final Answer
The correct statement about the two varieties of rye is:
- **Spring variety is planted in spring and autumn variety (winter variety) is planted in autumn and harvested around mid-summer.**