Select the odd one with respect to long-day plants.

Options

A. Poppy
B. Sunflower
C. Wheat
D. Radish

Answer

To solve the question of selecting the odd one with respect to long-day plants, we can follow these steps:

### Step 1: Understand Long-Day Plants
Long-day plants are those that require a longer duration of sunlight (more than a critical duration) to initiate flowering. They typically flower when the days are longer, usually in late spring and early summer.

### Step 2: Identify the Categories of Plants
Plants can be categorized into three types based on their light requirements for flowering:
1. **Long-Day Plants**: Require more sunlight than the critical duration.
2. **Short-Day Plants**: Require less sunlight than the critical duration.
3. **Day Neutral Plants**: Flower regardless of the length of daylight.

### Step 3: Analyze the Given Options
The options provided are:
- Poppy
- Sunflower
- Wheat
- Radish

### Step 4: Classify Each Option
- **Poppy**: Long-day plant.
- **Wheat**: Long-day plant.
- **Radish**: Long-day plant.
- **Sunflower**: Day neutral plant.

### Step 5: Identify the Odd One Out
From the classification:
- Poppy, Wheat, and Radish are all long-day plants.
- Sunflower is a day neutral plant.

Thus, the odd one out with respect to long-day plants is **Sunflower**.

### Final Answer
**Sunflower** is the odd one with respect to long-day plants.

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