Question

Which of the following statements is true?

विकल्प

• True cell evolved before the protocell

• Prokaryotes evolved before eukaryotes

• Eukaryotes evolved before prokaryotes

• Eukaryotes evolved before prokaryotes

Answer 1

Prokaryotes evolved before eukaryotes

Explanation:

• Prokaryotic cells were the first living cells, originating about 3.7 to 3.8 billion years ago.
• Eukaryotic cells evolved later, approximately 1.5 billion years ago during the Proterozoic era.
• True cells (eukaryotic) evolved after the protocell stage.
• Prokaryotes did not just emerge 1.5 billion years ago; they existed much earlier.