According to Haldane and Oparin finally protobionts evolved into

Options

A. Eukaryotic organisms
B. Early protists
C. Early protostomes
D. Early living organisms

Answer

**Step-by-Step Solution:**

1. **Understanding Protobionts**: Protobionts are aggregates of abiotically produced organic molecules that are considered precursors to living cells. They are not fully living organisms but have characteristics that could lead to life.

2. **Chemical Evolution**: According to Haldane and Oparin, chemical evolution is the process through which simple organic compounds evolved into more complex molecules, eventually leading to the formation of protobionts.

3. **Transformation of Protobionts**: Haldane and Oparin proposed that these protobionts eventually transformed into the first living organisms. Specifically, they evolved into prokaryotic organisms, which are simple, unicellular organisms without a nucleus.

4. **Evaluating the Options**:
- **Eukaryotic Organisms**: This option is incorrect because eukaryotic organisms have a defined nucleus, whereas protobionts evolved into prokaryotic organisms first.
- **Early Protostomes**: This option is also incorrect as protostomes are a group that includes certain types of animals that develop a mouth before an anus during embryonic development, which is a more complex evolutionary step.
- **Early Living Organisms**: This is a vague option that could refer to both eukaryotic and prokaryotic organisms, making it less specific.
- **Early Prokaryotic Organisms**: This is the correct answer because protobionts evolved directly into the first prokaryotic organisms.

5. **Conclusion**: The correct answer to the question is that according to Haldane and Oparin, protobionts evolved into early prokaryotic organisms.

**Final Answer**: Early Prokaryotic Organisms

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