The period between summer and autumn is favourable to

Options

A. short long day plants
B. long short day plants
C. day neutral plants
D. amphiphotoperiodic plants

Answer

To answer the question "The period between summer and autumn is favorable to," we need to analyze the different types of plants based on their light requirements for flowering.

### Step-by-Step Solution:

1. **Understanding Plant Types**:
- **Short Day Plants**: These plants require a longer period of darkness (night) than light (day) to flower. They typically bloom in late summer to early autumn.
- **Long Day Plants**: These plants require a longer period of light than darkness to flower. They usually bloom in late spring to summer.
- **Day Neutral Plants**: These plants do not depend on the length of day or night to flower. They can bloom at any time regardless of light conditions.
- **Amphiphoto Periodic Plants**: These plants require a specific combination of short and long days to flower.

2. **Identifying the Correct Option**:
- The period between summer and autumn typically has decreasing daylight hours. This environment is conducive to **short day plants** as they thrive when the nights are longer.
- Therefore, the correct answer is **short day plants**.

3. **Examples of Each Plant Type**:
- **Short Day Plants**: Examples include rice, tobacco, and cotton.
- **Long Day Plants**: Examples include lettuce, spinach, and potato.
- **Day Neutral Plants**: Examples include sunflower, cucumber, and tomato.
- **Amphiphoto Periodic Plants**: An example is bryophyllum, which requires a specific number of short and long days.

### Final Answer:
The period between summer and autumn is favorable to **short day plants**.

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