Why do photosynthesis and respiration have opposite orders of reactions

why are they backwards details pls

Let us define fist each terms:
Photosynthesis: is a chemical process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight.

Respiration: is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction.

Observation:
In photosynthesis, the converted carbon dioxide is being stored.
In Respiration, the inhaled oxygen is being converted to carbon dioxide when exhaled.

Difference:
The carbon dioxide is being kept as food for plants (photosynthesis), while the carbon dioxide in respiration is being exhaled by humans or other living things.