Phytochrome is found in

Options

A. algae/Thallophytes
B. vascular cryptogames
C. fungi
D. Angiosperms

Answer

**Step-by-Step Text Solution:**

1. **Understanding Phytochrome**: Phytochrome is a type of photoreceptor pigment found in plants that helps them detect light. It is primarily involved in regulating various developmental processes in response to light conditions.

2. **Identifying the Options**: The question provides four options regarding where phytochrome can be found:
- A) Algae or phthalophyte
- B) Vascular cryptogams
- C) Fungi
- D) Angiosperms

3. **Analyzing Each Option**:
- **A) Algae or phthalophyte**: While some algae may have light-sensitive pigments, they do not have phytochrome as it is specifically associated with higher plants.
- **B) Vascular cryptogams**: This term refers to plants like ferns (pteridophytes) which do not have phytochrome.
- **C) Fungi**: Fungi are not plants and do not possess phytochrome.
- **D) Angiosperms**: Angiosperms, or flowering plants, are known to contain phytochrome, which plays a crucial role in processes like seed germination, stem growth, and flowering based on light conditions.

4. **Conclusion**: Based on the analysis, the correct answer is **D) Angiosperms**. Phytochrome is specifically found in flowering plants and is essential for their growth and development in response to light.