Question

Endosymbiosis of cyanobacteria is widely accepted as an explanation for the development of chloroplasts. The presence of endosymbiotic cyanobacteria provided a cell with the advantage of ______.

A. tolerance to oxygen.
B. photosynthesis.
C. an electron transport chain.
D. simple, rapid gene transfer.
E. a membrane-bound nucleus.

Answer 1

Photosynthesis.

Step-by-step explanation:

Endosymbiotic theory may be defined as the theory that explain the evolution of the chloroplast and the mitochondria. The chloroplast is limited to the plant cells only.

The development of chloroplast proves to be beneficial for the plant cells. This makes the plant cells, autotrophic organism. The main site of the photosynthesis is chloroplast in plant cells. Chloroplast helps in the capture of sunlight and convert into the chemical energy.

Thus, the correct answer is option (B).