Which of the following pigment is present in two forms

Options

A. Cytochrome
B. Florigen
C. Phytochrome
D. Vernalin

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which pigment is present in two forms. We need to identify a pigment that has two distinct forms or types.

2. **Identifying the Options**: The options given in the question are not listed here, but we need to focus on common plant pigments known to exist in multiple forms.

3. **Recognizing Phytochrome**: Among the pigments, phytochrome is a well-known light-sensitive pigment that exists in two forms. It plays a crucial role in plant responses to light.

4. **Understanding the Forms of Phytochrome**: Phytochrome exists in two interconvertible forms:
- **Pr (Phytochrome Red)**: This form absorbs red light (around 660 nm).
- **Pfr (Phytochrome Far-red)**: This form absorbs far-red light (around 730 nm).

5. **Function of Phytochrome**: Phytochrome is involved in various plant processes, including seed germination, flowering, and shade avoidance. The conversion between Pr and Pfr forms is triggered by light exposure, allowing the plant to respond to environmental light conditions.

6. **Conclusion**: Based on the information, we conclude that phytochrome is the pigment present in two forms, making it the correct answer to the question.

### Final Answer:
The pigment that is present in two forms is **phytochrome**.

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