Which of the following plants do not show any correlation between exposure to light duration and induction of flowering response?

Options

A. Long day plant
B. Day neutral plant
C. Short day plant
D. All of these

Answer

To determine which of the following plants do not show any correlation between exposure to light duration and induction of flowering response, we need to analyze the types of plants based on their photoperiodic responses.

### Step-by-Step Solution:

1. **Understand Photoperiodism**:
- Photoperiodism is the phenomenon where the duration of light exposure affects the flowering response in plants.
- Plants can be categorized based on their light requirements for flowering.

2. **Identify Plant Categories**:
- **Long Day Plants (LDP)**: These plants require longer daylight periods to induce flowering. They flower when the light duration exceeds a certain critical length.
- **Short Day Plants (SDP)**: These plants require longer nights (or shorter daylight) to flower. They flower when the light duration is below a certain critical length.
- **Day Neutral Plants (DNP)**: These plants do not depend on the length of day or night for flowering. Their flowering is not correlated with light duration.

3. **Analyze the Options**:
- **Long Day Plant**: They show a correlation with light duration since they require longer light periods to flower.
- **Day Neutral Plant**: They do not show any correlation with light duration. Their flowering occurs regardless of the light exposure duration.
- **Short Day Plant**: They also show a correlation with light duration as they require longer nights to induce flowering.
- **All of These**: This option cannot be correct since only the day neutral plants do not show correlation.

4. **Conclusion**:
- The plant that does not show any correlation between exposure to light duration and induction of flowering response is the **Day Neutral Plant**.

### Final Answer:
**Day Neutral Plant** is the correct answer.

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