Final answer:
The mitochondria and chloroplasts are the organelles in eukaryotic cells that supply energy in the form of ATP; mitochondria through cellular respiration and chloroplasts through photosynthesis.
Step-by-step explanation:
The pair of organelles responsible for supplying energy in the form of ATP to eukaryotic cells are the mitochondria and chloroplasts. Mitochondria are often dubbed the 'powerhouses' of the cell, as they produce ATP through a process called cellular respiration. Chloroplasts are found in plant cells and other photosynthetic organisms and they help in generating ATP through the process of photosynthesis.
Learn more about Cell Organelles