Independent free living photosynthetic gametophyte is not found in life cycle of

Options

A. Funaria
B. Marchantia
C. Eucalyptus
D. Riccia

Answer

To solve the question about which organism does not have an independent free-living photosynthetic gametophyte in its life cycle, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Life Cycle of Plants**:
- Plants have two main phases in their life cycle: the gametophyte phase and the sporophyte phase. The gametophyte is usually haploid (having one set of chromosomes) and produces gametes, while the sporophyte is diploid (having two sets of chromosomes) and produces spores.

2. **Identify the Dominant Phase**:
- In some plant groups, the gametophyte phase is dominant and independent. This is particularly true for bryophytes (like mosses and liverworts), where the gametophyte is the main plant body and is photosynthetic.
- In contrast, in angiosperms (flowering plants), the sporophyte phase is dominant, and the gametophyte is reduced and dependent on the sporophyte.

3. **Analyze the Given Options**:
- The question mentions organisms such as Phanaria, Marchantia, and Riccia, which are bryophytes. In these plants, the gametophyte is indeed free-living and photosynthetic.
- Eucalyptus, on the other hand, is an angiosperm. In Eucalyptus, the dominant phase of the life cycle is the sporophyte, and the gametophyte is not free-living or photosynthetic.

4. **Conclusion**:
- Since Eucalyptus is the only option among the given choices that does not have an independent free-living photosynthetic gametophyte, it is the correct answer to the question.

### Final Answer:
The independent free-living photosynthetic gametophyte is not found in the life cycle of **Eucalyptus**.

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