Question

Based on the currently accepted theories for the evolution of eukaryotic cells, which of the following cell structures currently found in Green Algae evolved from the plasma membrane of an ancestral cell?

1) Mitochondria
2) Chloroplasts
3) Golgi Apparatus
4) Endoplasmic Reticulum

Answer 1

Chloroplasts in Green Algae evolved from the plasma membrane of an ancestral cell through secondary endosymbiosis. Hence the correct answer is option 2

Step-by-step explanation:

The currently accepted theories for the evolution of eukaryotic cells suggest that chloroplasts evolved from the plasma membrane of an ancestral cell. This occurred through a process called secondary endosymbiosis, where another cell engulfed a green algal cell that already had a primary chloroplast within it. The engulfing cell destroyed everything except the chloroplast and possibly the cell membrane of its original cell, leaving three or four membranes around the chloroplast.

Hence the correct answer is option 2