Which of these is a true statement ?

Options

A. Eukaryotes evolved before prokaryotes
B. Prokaryotes evolved before eukaryotes
C. The true cell evolved before the protocell
D. Prokaryotes did not evolve until 1.5 billion years ago

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Statements**: We need to evaluate four statements to determine which one is true regarding the evolution of cells.

2. **Analyzing Statement 1**: The first statement claims that "Eukaryotes evolved before Pre-Eukaryotes." This is incorrect because eukaryotes are complex cells that evolved after prokaryotes (which are simpler).

3. **Analyzing Statement 2**: The second statement asserts that "Pre-eukaryotes evolved before eukaryotes." This is correct. Pre-eukaryotes, which are simpler forms of cells, indeed evolved before the more complex eukaryotic cells.

4. **Analyzing Statement 3**: The third statement states that "True cells evolved before the protocell." This is also incorrect. Protocells are considered to be the precursors to true cells, suggesting that protocells came first in the evolutionary timeline.

5. **Analyzing Statement 4**: The fourth statement claims that "Prokaryotes did not evolve 1.5 billion years ago." This is misleading. Prokaryotes are believed to have existed for much longer than 1.5 billion years, so this statement is also incorrect.

6. **Conclusion**: After analyzing all statements, the only true statement is the second one: "Pre-eukaryotes evolved before eukaryotes."

**Final Answer**: The correct statement is: "Pre-eukaryotes evolved before eukaryotes."

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