The following processes that occur in the cells of plants:
C. production of food through photosynthesis
B. removal of wastes
A. exchange of CO2 and O2
- Photosynthesis is a process by which green plants prepare their food by using carbon dioxide and water as reactant in the presence of sunlight to produce carbohydrate. The photosynthesis occurs in the cells of the leaves in plants.
- The removal of wastes in plants takes place by the stomatal pores present on the surface of leaves and by the lenticels present on the surface of stem. They allow the removal of excess water, and gaseous pollutant like carbon dioxide during respiration.
- Exchange of gases like carbon dioxide and oxygen occurs through respiration and photosynthesis. During respiration carbon dioxide is expelled out from the plant cells via stomata and oxygen is taken inside whereas the photosynthesis occurs during day time and fixes the atmospheric carbon dioxide and release the oxygen to the atmosphere as byproduct of photosynthesis.
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