First organisms that invaded land were

Options

A. Herbivores
B. Carnivores
C. Plants
D. Consumers

Answer

**Step-by-Step Solution:**

1. **Identify the First Organisms on Land**: The question asks for the first organisms that invaded land. To answer this, we need to consider the timeline of evolution and the types of organisms that transitioned from aquatic to terrestrial environments.

2. **Consider Plant Life**: The first organisms to colonize land were not animals but plants. Specifically, non-flowering plants were the pioneers in terrestrial habitats.

3. **Focus on Primitive Plants**: The earliest plants that invaded land were primitive types, such as mosses and liverworts. These plants do not have complex structures like roots, stems, or leaves as seen in flowering plants.

4. **Timeframe of Colonization**: Approximately 470 million years ago, these primitive plants began to colonize terrestrial habitats. This indicates that they were the first significant life forms to adapt to land.

5. **Conclusion**: Based on the evidence, the first organisms that invaded land were primitive plants, specifically the group known as "Thallophytes," which includes mosses and liverworts.

**Final Answer**: The first organisms that invaded land were primitive plants, specifically Thallophytes (mosses and liverworts).

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