Phytochrome is responsible for

Options

A. Flowering
B. Seed germination
C. Transpiration
D. Both 1 & 2

Answer

**Step-by-Step Solution:**

1. **Understanding Phytochrome**: Phytochrome is a type of photoreceptor found in plants. It is a chromoprotein that plays a crucial role in detecting light.

2. **Functions of Phytochrome**: Phytochrome is responsible for several important processes in plants, including:
- **Flowering**: It helps regulate the timing of flowering in response to light conditions.
- **Seed Germination**: Phytochrome also plays a role in the germination of seeds by detecting light and signaling the seed to begin the germination process.
- **Chloroplast Development**: It is involved in the synthesis and development of chloroplasts, which are essential for photosynthesis.
- **Seedling Elongation**: Phytochrome influences the elongation of seedlings, allowing them to grow towards light.

3. **Identifying the Correct Options**: Based on the functions of phytochrome:
- It is responsible for flowering (Option 1).
- It is also responsible for seed germination (Option 2).
- It does not play a role in transpiration.

4. **Conclusion**: The correct answer to the question is that phytochrome is responsible for both flowering and seed germination. Therefore, the correct option is D: both 1 and 2.

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