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280192
Photosynthesis
Descripción
Mapa Mental sobre Photosynthesis, creado por bradley.s.yates9 el 15/10/2013.
Mapa Mental por
bradley.s.yates9
, actualizado hace más de 1 año
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bradley.s.yates9
hace casi 11 años
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Resumen del Recurso
Photosynthesis
Carbon dioxide + Water -----> Oxygen + Glucose
Glucose
Stored as insoluble starch
Used by plant for respiration
Leaves
Tiny spaces to allow CO2 in and O2 out by diffusion.
Most leaves are broad - made for large surface area
Contain Chlorophyll in cloroplast to absorbe the light energy (green plants only)
Has plenty of veins which carry H2O
Rate of photosynthesis
factors that affect it?
Light
The more light, the greater rate of photosynthsis
little or no light, no photosynthesis
brighter the light, greater rate of photosynthesis
Temperature
affects the rate of chemical reaction
optimal temp. - Enzymes become denatured above 40*C, don't work
Carbon dioxide
atmosphere only contains about 0.04% CO2
Biggest limitry factor
the higher concentration of CO2, the slower rate of photosynthesis
Mineral ions needed
Magnesium
nitrate
poor growth if mineral ions are deficient
plants
absorb water through roots
absorb CO2 through leaves
Oxygen is released as a by-product of photosynthesis
open microsoft WORD file (saved under everything-school-science revision-tree photosynthesis diagram circuit)
Recursos multimedia adjuntos
co2_concentration_affecting_photosynthesis_graph (image/jpg)
optimum_tempeture_affecting_photosynthesis_graph (image/jpg)
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