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Photosynthesis

QuestionAnswer
Describe the method to test a leaf to show the effect of light on photosynthesis boil leaf in water; boil in ethanol; soak in water; add iodine solution
Explain why the rate of photosynthesis levels off at high light intensity due to limited number of chloroplasts, temperature and amount of CO2 available
Describe how one could change the light intensity in this investigation change the distance light bulb to plant
Describe how to measure the rate of photosynthesis count the number of bubbles per minute
Describe how the structure of the leaf is adapted for photosynthesis wide leaf diffusion; leaf thin short diffusion distance; epidermis transparent palisade cells many chloroplasts to absorb light; spongy cells have air spaces for diffusion; stomata to absorb carbon dioxide; xylem bring water for photosynthesis
Describe the method to test a leaf to show the effect of light on photosynthesis boil leaf in water; boil in ethanol; soak in water; add iodine solution
Describe how one could change the light intensity in this investigation change the distance light bulb to plant
Describe how to measure the rate of photosynthesis count the number of bubbles per minute
Explain why the following steps are taken during the photosynthesis investigation: boil leaf in water to soften the leaf
Explain why the following steps are taken during the photosynthesis investigation: boil in ethanol to remove chlorophyll
Explain why the following steps are taken during the photosynthesis investigation: using a hot water bath and/or turn off Bunsen Ethanol is flammable
Explain why the following steps are taken during the photosynthesis investigation: soak in water to rehydrate / allow diffusion
Explain why the plants are kept in the dark for 24 hours at the beginning of the investigation to destarch
State the function of the potassium hydroxide. to remove carbon dioxide
State the results of the chemical test for starch using iodine solution. the iodine goes from orange to blue-black in presence of starch
Explain why plants store carbohydrate as starch rather than as glucose starch is insoluble(1) does not have osmotic effect on plant cell does not diffuse / pass out of cells(1)
Explain why the rate of photosynthesis levels off at high light intensity number of chloroplasts, temperature and amount of CO2 available due to limited number of chloroplasts, temperature and amount of CO2 available
what is the word equation for photosynthesis carbon dioxide + water --> glucose + oxygen
what is the symbolic equation for photosynthesis 6 CO2 + 6 H2O --> C6H12O6 + 6 O2
In which organelle does photosynthesis take place in the chloroplast
what is the name of the pigment that absorbs light chlorophyll
From top to bottom, describe the structure of a leaf upper epidermis; palisade cells; spongy cells and xylem; guard cells and stomata
Created by: ursulinebio
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