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Plant Structure8 - Root The part of a plant beneath the...

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Plant Structures Perianth - Nonreproductive portion of a flower comprised of the calyx and corolla. Petal - Modified leaf, usually brightly colored, that attracts insects and other pollen- carrying animals to the flower. Phloem - Vascular tissue composed of conductile cells that are living at maturity; transports the products of photosynthesis throughout the plant body. Photosynthesis - The process by which plants and other autotrophic organisms convert light energy into organic materials. Pistil - The female reproductive organ of the flower, composed of a stigma, style, and ovary; sometimes called the carpel. Pith - Plant tissue located at the center of the stem; functions partly in nutrient storage. Pollen Grain - The male gametophyte of gymnosperms and angiosperms. Ray - Horizontal passageways in the stems of woody dicots that lead from the phloem to the pith at the center of the stem.
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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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