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Photosynthesis

TermsDefinition
carbon dioxide is a colorless gas with a density about 60% higher than that of dry air.
oxygen is a chemical element with symbol O and atomic number 8.
glucose a simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.
photosynthesis the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
autotrophs an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
chloroplast a plastic that contains chlorophyll and in which photosynthesis takes place.
chlorophyll a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis.
stoma any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width that allows movement of gases in and out of the intercellular spaces.
guard cells each of a pair of curved cells that surround a stoma, becoming larger or smaller according to the pressure within the cells.
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