Question

fill in the blank question chloroplasts and mitochondria both developed in eukaryotic cells through endosymbiosis, though were probably the first of the two organelles to develop because they are found in all eukaryotes. need help? review these concept resources. 12 of 22 concepts completed

Explanation:

Chloroplasts and mitochondria are thought to have originated from endosymbiotic events. Mitochondria are present in all eukaryotes and are crucial for energy - production. Chloroplasts are mainly in plants and some protists for photosynthesis. Mitochondria are likely to have developed first as they are more widespread in eukaryotic cells.

Answer:

mitochondria