Which of the following plant is LDP?
(a) Xanthium
(b) Soyabean
(c) Wheat
(d) Tobacco

Options

A. Xanthium
B. Soyabean
C. Wheat
D. Tobacco

Answer

To determine which of the given plants is a Long Day Plant (LDP), we can follow these steps:

### Step 1: Understand the Definition of Long Day Plants (LDP)
Long Day Plants are those that require longer daylight periods (photo periods) to induce flowering. They typically flower when the day length exceeds a certain critical duration.

### Step 2: Analyze the Given Options
We have the following options:
(a) Xanthium
(b) Soyabean
(c) Wheat
(d) Tobacco

### Step 3: Identify the Characteristics of Each Plant
- **Xanthium**: This is a short day plant (SDP), which means it flowers with shorter daylight periods.
- **Soyabean**: This is also a short day plant, requiring shorter days for flowering.
- **Wheat**: This is a known long day plant that requires longer daylight periods to flower.
- **Tobacco**: This plant can be classified as a short day plant, depending on the variety.

### Step 4: Conclusion
From the analysis, the only plant that qualifies as a Long Day Plant among the options is **Wheat**.

### Final Answer
(c) Wheat

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