Biology 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelWJEC Created by: A.sxCreated on: 07-03-17 21:23 Definition of Transpiration The evaporation of water vapour from the leaves or above-ground parts of the plant, out through stomata into the atmosphere. 1 of 6 Definition of Double Circulatory System Blood passes through the heart twice in its circuit around the body, e.g. mammals. 2 of 6 Definition of Apoplast Pathway Pathway of water through non-living spaces between cells and in cell walls outside the cell membrane. 3 of 6 Definition of Symplast Pathway Pathway of water through plant, within cells in which molecles diffuse through the cytoplasm and plasmodesmata. 4 of 6 What is the function of a Sieve Tube To transport sucrose, amino acids up and down the stem. 5 of 6 What is the function of a companion cell Connect to the sieve tubes via plasmodesmata 6 of 6
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