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Transcript of Photosynthesis
Parts of the Plant
By the dictionary - the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.
Root - (Greek) photo - light, synthese (synthesis) - combining
carbon dioxide + water
glucose + oxygen
Photosynthesis is the process used by plants to make their own food.
Conversion of light energy into chemical energy (used by plants for growth)
By Júlia Riani, Camila Cuetos, Rodrigo Gutiérrez, Mayara Martins and Luiza Eboli
where photosynthesis happens inside the plant cells
give plants their green color
takes in energy from the sun
Chloroplasts are located at the top of the leaves, so they can get as much sunlight as possible.
Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells containing chlorophyll.
Why is photosynthesis important to us?
Photosynthesis makes food for plants. It also provides us with most of the oxygen we need in order to breathe and consumes carbon dioxide from the atmosphere. Plants are also crucial to human life because we rely on them as a source of food for ourselves and for the animals that we eat.
Chloroplasts photosynthesize more than they need at once, so they store the extra glucose. Since glucose is soluble in water, plants store it as starch. Some of the extra glucose is also stored in the roots of the plants.
- the stored extra glucose is used to perform photosynthesis when there is no sunlight
Xylem - tubes in the stems/branches of plants that transport water and nutrients through the plant
Stomata - pores on leaves that are responsible for the exchange of gas (CO2 in and O2 out)
Phloem - vascular tubes that transport sugars from the leaves to other parts of
Mesophyll - inner tissue in leaves that contains chloroplasts