Question

Structure of chloroplast​

Answer 1

Explanation:

The chloroplast has an inner and outer membrane with an empty intermediate space in between. Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast. These thylakoids contain the chlorophyll that is necessary for the plant to go through photosynthesis.

Answer 2

Answer: The unique structure of chloroplast is supposed to have evolved from endosymbiotic cyanobacteria (blue green algae) over the course of millions of years. Chloroplasts are flat disc shaped organelles which are usually 2-10 um in diameter with a thickness of about 1um.