Gametophyte is dominant phase in the life cycle of

Options

A. Hibiscus
B. Riccia
C. Nephrolepis
D. Cycas

Answer

**Step-by-Step Solution:**

1. **Understanding the Life Cycle of Plants:**
- In the plant kingdom, there are two main phases in the life cycle: the gametophyte phase and the sporophyte phase. The gametophyte is the haploid phase that produces gametes (sperm and eggs), while the sporophyte is the diploid phase that produces spores.

2. **Identifying Dominant Phase:**
- The question asks which group of plants has the gametophyte as the dominant phase. In certain groups of plants, such as bryophytes, the gametophyte is the main and most prominent stage of the life cycle.

3. **Examples of Plants:**
- The video mentions several examples: Hibiscus, Rixia, Nephrolapis, and Cycus.
- Hibiscus is a flowering plant (angiosperm) where the sporophyte is dominant.
- Rixia is a bryophyte, where the gametophyte is the dominant phase.
- Nephrolapis is a fern (pteridophyte), where the sporophyte is dominant.
- Cycus is a gymnosperm, where the sporophyte is also dominant.

4. **Conclusion:**
- Based on the information provided, the correct answer to the question is Rixia, as it is a bryophyte where the gametophyte is the dominant phase in its life cycle.

**Final Answer:**
The gametophyte is the dominant phase in the life cycle of Rixia (a bryophyte).

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