plant transport systems 0.0 / 5 ? BiologyCells, tissues and organsIGCSEEdexcel Created by: vanessaCreated on: 16-12-13 12:27 what is transpiration water evaporating of the surface of leaves 1 of 6 where has the most stomata the lower epidermis so the least evaporation takes place 2 of 6 explain the mass potometre as the water goes up in the plant, the oil will lower so we can see how much has moved, and the oil stops water evaporating 3 of 6 why are water molecules pulled up through the xylem they are cohesive 4 of 6 four factors that affect transpiration? wind, heat, humidity, light 5 of 6 four differences between the xylem and the phloem 1. xylem carries water and minerals, phloem carries sugars 6 of 6
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