happens inside chloroplasts-contain chlorophyll which abosbs sunlight, uses suns energy to convert carbon dioxide (from air) and water (from soil) into glucose and oxygen (by-product)
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Plant Organs
plant organs include-stems, roots and leaves
organs are made of tissue
leaves are made of:
mesophyll tissue-where most photosynthesis occurs
xylem and phloem-transport water, mineral ions & surcrose around plant
epidermal tissue-covers plant
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Rate of Photosynthesis
factors-intensity of light, volume of CO2, temperature
limiting factor-something that is stopping photosynthesis from happening faster
depends on environmeantal conditions:
night-light is limiting factor
winter-temperature
warm enough & bright enough-CO2 limiting factor
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How plants use glucose
respiration-releases energy during resperation, enables it to convert rest of the
glucose into useful substances for building cells and growing
making cell walls-converted into cellulose for making strong cell walls
making proteins-combined with nitrate ions to make amino acids
stored in seeds- turned into lipids for stroing in seeds-we get marg and cooking oil from sunflower seeds
stored as starch-turned into starch, stored in roots, stem and leaves, use when photosynthesis isnt happening, insoluble so best for stroing
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