| Transpiration is the way water moves trough a plant. Water moves in through the roots, up the stem and evaporates out through the leaves. In the experiment shown left, food colouring was added to water and the it traveled through the xylem vessels, turning the leaves red. | 
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2015 Coursework B Titles.
Biology
Investigate and compare the quantitative effects of changing (a) wavelength of illumination and (b) either intensity or duration of illumination on the photo-tropic growth response of recently germinated plant shoots/seedlings.
Chemistry
Investigate and compare the quantitative effects of changing (a) metal types and (b) fruit/vegetable type on the emf (voltage) produced across two metals, when the electrolytes take the form of fruits and/or vegetables.
Physics
Investigate and compare the quantitative effects of changing (a) material type and (b) material thickness on the level of sound insulation provided by a range of materials.
Biology
Investigate and compare the quantitative effects of changing (a) wavelength of illumination and (b) either intensity or duration of illumination on the photo-tropic growth response of recently germinated plant shoots/seedlings.
Chemistry
Investigate and compare the quantitative effects of changing (a) metal types and (b) fruit/vegetable type on the emf (voltage) produced across two metals, when the electrolytes take the form of fruits and/or vegetables.
Physics
Investigate and compare the quantitative effects of changing (a) material type and (b) material thickness on the level of sound insulation provided by a range of materials.
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