Effect of daily light period on flowering is

Options

A. Photorespiration
B. Photomorphogenesis
C. Photoperiodism
D. Photoropism.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the effect of daily light periods on flowering in plants. This phenomenon is important in botany and plant physiology.

2. **Identifying the Term**: The effect of light duration on flowering is known as "photoperiodism." This term describes how different lengths of daylight affect the flowering process in various plant species.

3. **Historical Context**: Photoperiodism was first described by scientists Garner and Allard. They studied this phenomenon in the Maryland Mammoth variety of tobacco, which helped establish the concept.

4. **Types of Plants Based on Photoperiodism**:
- **Long Day Plants**: These plants require longer daylight periods to flower. They typically bloom in late spring or early summer when days are longer.
- **Short Day Plants**: These plants need shorter daylight periods to flower. They usually bloom in late summer or fall when days are shorter.
- **Day Neutral Plants**: These plants do not depend on the length of daylight for flowering. They can flower regardless of light duration.

5. **Conclusion**: Based on the information provided, the correct answer to the question regarding the effect of daily light period on flowering is "photoperiodism."

**Final Answer**: The effect of daily light period on flowering is called photoperiodism.

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