Dominant flora, 200 million years ago was that of

Options

A. Angiosperms
B. Gymnosperms
C. Ferns
D. Lycopods.

Answer

To answer the question about the dominant flora 200 million years ago, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the dominant flora 200 million years ago. We need to identify which group of plants was predominant during that time.

2. **Identifying the Options**: The options given are:
- a) Angiosperms
- b) Gymnosperms
- c) Ferns
- d) Lycopods

3. **Analyzing the Time Period**: 200 million years ago corresponds to the late Triassic period, which is part of the Mesozoic Era. During this time, the plant life was significantly different from today.

4. **Researching Plant Groups**:
- **Angiosperms**: These are flowering plants that became dominant much later in the Cretaceous period.
- **Gymnosperms**: These are non-flowering seed plants that were prevalent during the Mesozoic Era, including conifers and cycads.
- **Ferns**: These are seedless vascular plants that were also present but not as dominant as gymnosperms during this period.
- **Lycopods**: These are primitive vascular plants that were more dominant in earlier geological periods.

5. **Conclusion**: Based on the analysis, gymnosperms were the dominant flora 200 million years ago. They thrived in the climate conditions of that era and included many large tree species.

### Final Answer:
The dominant flora 200 million years ago was **Gymnosperms** (Option b).