Question

What observation led researchers to propose that chloroplasts evolved from cyanobacteria?
Both produce proteins.
Both contain mitochondria.
Both provide structure to cells.
Both perform photosynthesis.

Answer 1

The correct option is  Both perform photosynthesis

Explanation:

• Cyanobacteria are one of the oldest living forms of life on earth.
• In the olden times, cyanobacteria were the first species that had the ability to photosynthesize i.e produce their own food by by using light energy from the sun.
• Hence, scientists have concluded that the chloroplasts evolved from the cyanobacteria. Chloroplasts are the organelles which are involved in the main process of photosynthesis.

Answer 2

Explanation:

Both perform photosynthesis