Which one among the following cell organelles in a Eukaryotic cell is

Which one among the following cell organelles in a Eukaryotic cell is acquired during the process of evolution by entrapment or engulfment of Bacterial cells ?

Peroxisomes

Vacuoles

Chloroplasts

Mitochondria

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UPSC CAPF – 2011

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Mitochondria is a cell organelle in a Eukaryotic cell that is acquired during the process of evolution by entrapment or engulfment of Bacterial cells.

The Endosymbiotic Theory proposes that certain organelles within eukaryotic cells, including mitochondria and chloroplasts, originated as free-living prokaryotic cells that were engulfed by a host cell and established a symbiotic relationship.

Mitochondria are believed to have originated from the engulfment of aerobic bacteria, which occurred in an early eukaryotic ancestor. Chloroplasts originated later from the engulfment of photosynthetic bacteria (cyanobacteria) in a lineage of eukaryotes that already possessed mitochondria. Since mitochondria are found in nearly all eukaryotic cells, their acquisition is considered a fundamental step in eukaryotic evolution.

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