Transpiration is vital for the bitter leaf plant, like other plants, for several reasons: It creates a transpirational pull*, which is the main force that draws water and dissolved mineral nutrients from the roots up to the leaves and other parts of the plant. The evaporation of water from the leaf surface helps to cool the plant*, preventing overheating, especially in its native tropical and subtropical habitats. It facilitates the continuous uptake of water, which is essential for maintaining turgor pressure* in cells, supporting the plant's structure, and enabling photosynthesis. 3 done, 2 left today. You're making progress.