Question

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?

Answer 1

the answer is D Both perform photosynthesis.

Step-by-step explanation:

Because they both perform photosynthesis and they are both autotrophs.

Answer 2

Both chloroplasts and cyanobacteria perform photosynthesis. They also share many characteristics, including an inner and outer membrane, a nucleoid, thylakoids, lipid droplets and ribosomes. These similarities lead to the suggestion chloroplasts evolved from cyanobacteria.