Unformatted text preview: Root - The part of a plant beneath the soil; responsible for collecting water and minerals from the soil, storing nutrients, and securing the plant to the ground. Sapwood - Wood made up of xylem tissue that is active in the vascular system. Sepal - Green, leaf-like structure that encloses and protects the unopened flower bud. Spongy Layer - A layer of the mesophyll. The spongy layer consists of chloroplasts and parenchyma cells, and relatively large intercellular spaces. It is far less ordered than the palisade layer, and the intercellular spaces are important in gas exchange and transpiration. Stamen - The male reproductive organ of the flower, comprised of an anther and filament. Stigma - The top part of the pistil, where pollen grains are received. Stoma - A very small epidermal pore, surrounded by two guard cells, through which gases diffuse in and out of a leaf....
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- Winter '09
- Biology, Flowering plant, Pollen