Plant nutrition

Plant nutritionPhotosynthesisImportance of photosynthesisFactors for photosynthesisProvides foodMaintains the balance of oxygen and carbon dioxide in the atmosphereenergy is stored in fossil fuelsMakes chemical energy available for other organisms and ecosystem'sHow do you know that photosynthesis has taken placeAppends in two stages and enzymes are involved in boutlight independent stagelight dependent stagelight is converted to chemical energy by chlorophyllcarbon dioxide is converted to glucoseNutrient elementslight intensitysuitable temperaturewaterchlorophylloptimal temperature is required for enzymes to be affectiverate of photosynthesis is greatphotosynthesis stops at nightsugars can be formed faster to be removed laterexcess glucose converted to starchstarch converts back to glucosewater is converted to hydrogen and oxygenLeaf adaptations for Photosynthesishydrogen from waterreduces carbon dioxide to glucoseenergy needed from light independent stageConcentration of carbon dioxideThe upper epidermis of the leaf is transparentAir spaces to increase diffusion of carbon dioxideChloroplast in palisade cellsPresence of starch indicates that it has taken placeDefinitionthe process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.How guard cells control the size of the tomatoesIn sunlightat nightGuard cells cover light to chemical energyWater potential is loweredGuard cells have thicker wall on one side of the cellpotassium ions accumulate in guard cellswater from neighboring epidermis cells enter guard cells by osmosiscauses swollen guard cells to become more curved and pull atoms openincreases turgidity making it swollenpotassium ions diffuse outwater potential in guard cells increaseguard cells become flaccid and atoms releasewater leaves cells by osmosisWhat happens to produced glucoseConverted to sucrosereacts with mineral salts absorbed from soilexcess stored as starch in leavesConverted to fatsConverted to amino acids and proteinsbroken down to release energy to vital activesHow plants absorb sunlightChlorophyllGives plants its green colorPigment in plants that absorb sunlightfor storageUsed in cellular respirationmight be converted back to glucosetransported to other parts of the plantseedsstem tubersroot tubersto form amino acids in leaves