Beta vulgaris is 

Options

A. SDP
B. LDP
C. DNP
D. IDP.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about Beta vulgaris and its classification regarding day length requirements for flowering.

2. **Identifying Beta vulgaris**: Beta vulgaris is commonly known as beetroot. This is important to note as it helps in understanding its growth requirements.

3. **Classifying Beta vulgaris**: The classification of plants based on their flowering response to day length includes:
- Short Day Plants (SDP): Require longer periods of darkness to flower.
- Long Day Plants (LDP): Require longer periods of light to flower.
- Day Neutral Plants (DNP): Flower regardless of day length.
- Intermediate Day Plants (IDP): Require specific light conditions that are in between short and long days.

4. **Determining the Type of Plant**: Beta vulgaris (beetroot) is classified as a Long Day Plant (LDP). This means it requires longer exposure to light (or shorter periods of darkness) for flowering.

5. **Examples of Other Plant Types**:
- Short Day Plants: Examples include rice, tobacco, and cotton.
- Long Day Plants: Examples include potato, radish, and sugar beet (which is another name for Beta vulgaris).
- Day Neutral Plants: Examples include sunflower, cucumber, and tomato.
- Intermediate Day Plants: These are not specifically mentioned in the question but are defined as plants that require conditions between short and long days.

6. **Final Answer**: Therefore, the correct classification for Beta vulgaris is that it is a Long Day Plant (LDP).

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