Which Structure Below is Unique to Organisms That Harness Solar

Question

Which structure below is unique to organisms that harness solar energy to make sugar?  
A) Endoplasmic reticulum
B) Chloroplast
C) Plasma membrane
D) Chromosome
E) Nuclear envelope

Accepted Answer

Chloroplasts are unique to organisms that harness solar energy to make sugar through photosynthesis. Endoplasmic reticulum, plasma membrane, chromosome, and nuclear envelope are found in various types of cells and are not exclusive to photosynthetic organisms.