A dominant , independent, photosynthetic, thalloid or erect body is represented by a haploid gametophyte and it alternates with the short–lived multicellular sporophyte totally or partially dependent on the gametophyte for its anchorage and nutrition. This type of pattern is present in:-

Options

A. Bryophytes (mosses and liverworts)
B. Pteridophytes (ferns and horsetails)
C. Gymnosperms (Cycas and Pinus)
D. Most of the algae (Ulothrix and Spirogyra)

Answer

To solve the question, we need to analyze the characteristics described and identify which group of plants they correspond to.

### Step-by-Step Solution:

1. **Identify Key Characteristics**: The question describes a plant with a dominant, independent, photosynthetic body that is thalloid or erect. This body is a haploid gametophyte, which alternates with a short-lived multicellular sporophyte that is dependent on the gametophyte for anchorage and nutrition.

2. **Understand Gametophyte and Sporophyte**: In the life cycle of plants, the gametophyte is the haploid stage that produces gametes, while the sporophyte is the diploid stage that produces spores. The description indicates that the gametophyte is the dominant form, which is a key feature of certain plant groups.

3. **Relate to Plant Groups**: The characteristics described are typical of bryophytes, which include mosses, liverworts, and hornworts. In bryophytes, the gametophyte is the dominant, photosynthetic stage, while the sporophyte is often short-lived and dependent on the gametophyte.

4. **Confirm the Group**: Bryophytes are known for their thalloid or erect gametophyte structures and their dependence on water for reproduction. They are considered the amphibians of the plant kingdom due to their need for moist environments.

5. **Choose the Correct Answer**: Given the characteristics and the analysis, the correct answer to the question is that this type of pattern is present in bryophytes.

### Final Answer:
The type of pattern described is present in **bryophytes**.

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