The five factors that might influence the rate of oxygen (or carbon dioxide) production or consumption in leaves are:
Amount of light (light intensity)
Carbon dioxide supply
Temperature
Water supply
Availability of minerals
Photosynthesis, as explained by Britannica.com, is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
The rate of photosynthesis is defined in terms of the rate of oxygen production either per unit mass (or area) of green plant tissues or per unit weight of total chlorophyll.
The rate of photosynthesis is also determined by the plant species and its physiological state—e.g., its health, its maturity, and whether it is in flower.
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