Answer
B
Work Step by Step
According to the endosymbiotic theory, cyanobacteria is the ancestor of modern chloroplasts. The cyanobacteria was able to prosper within other cells and eventually became the chloroplast.
Biological Science (6th Edition)
by Freeman, Scott; Quillin, Kim; Allison, Lizabeth; Black, Michael; Taylor, Emily; Podgorski, Greg; Carmichael Jeff
Published by
Benjamin Cummings
ISBN 10:
0321976495
ISBN 13:
978-0-32197-649-9
Chapter 27 - Protists - Review - Page 559: 4
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