Answer:
In plant cells, ATP or adenosine triphosphate is primarily synthesized in the mitochondria and chloroplasts. The mitochondria are organelles that generate energy for the cell through the process of cellular respiration, which involves the breakdown of glucose and other molecules to produce ATP. The chloroplasts are the organelles responsible for photosynthesis, the process by which light energy is converted into chemical energy in the form of ATP and other molecules. During photosynthesis, the chloroplasts use light energy to convert carbon dioxide and water into glucose, which is then broken down in the mitochondria to produce ATP. ATP is a critical molecule for all cells, including plant cells, as it provides the energy necessary for many cellular processes, such as protein synthesis, DNA replication, and muscle contraction.