Lesson 8-Leaf Structure & Transpiration what you need to know latest exam update

Lesson 8-Leaf Structure & Transpiration what you need to know latest exam update epidermis - the outermost layer of the leaf. guard cell - pairs of cells that surround stomata and control their opening and closing. stoma - is the pore, which is surrounded by two guard cells. stomata - the collection of stoma found inside the lower epidermis of plant leaves. osmosis - the diffusion of water. solute - a substance that is dissolved in a solution. stomatal unit - a pair of guard cells and the stoma they form. turgid - swollen as from a fluid; bloated. transpiration - the evaporation of water from the leaves of a plant. chlorophyll - green pigment in plants that absorbs light energy used to carry out photosynthesis. chloroplast - organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy. glucose - a simple sugar that is an important source of energy. mesophyll - the tissue in the interior of the leaf.