For plants to perform photosynthesis they require light energy from the sun, water and carbon dioxide.

Water is absorbed from the soil into the cells of root hairs. The water passes from the root system to the xylem vessels in the stem until it reaches the leaves.

Carbon dioxide is absorbed from the atmosphere through pores in the leaves called stomata.

The leaves also contain chloroplasts which hold chlorophyll. The sun's energy is captured by the chlorophyll. Lastly the plant makes and releases oxygen and glucose

First Glycolosis helps split sugars in cytoplasm, energy investment phase to combine with glucose molecule.

Second Pyruvates move into mitochondria, through oxidation breaking into water.

Thirdly for every glucose, the cycle repeats breakdown of pyruvic molecules -> carbon dioxide, releases 2 ATP's in this stage

Photosynthesis is the glucose that is used in cellular respiration to produce ATP. Although photosynthesis needs carbon dioxide and releases oxygen, cell respiration requires oxygen and releases carbon dioxide.