Plant Parts Worksheet Taproot- A straight tapering root growing vertically downward and forming the center from which subsidiary rootlets spring Fibrous Root- Fine, threadlike or slender roots. Petal- The segment of the flowers, usually colored. Anther- The part of a stamen that contains the pollen Filament- The slender part of a stamen that supports the anther Stamen- The male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament Ovule- A part of a flower. Part of the female part of the flower and is an unpollinated, immature seed. Once pollinated, the ovule will develop into seeds. Sepal- the outermost parts of a flower which cover and protect the flower when it is in bud. They are usually green. Receptacle- The part of a flower stalk where the parts of the flower are attached. Ovary- the part of the pistil which holds the ovule(s) and is located above or below or at the point of connection with the base of the petals and sepals. Style- the style is a structure found within the flower. It is a long, slender stalk that connects the stigma and the ovary. Stigma- the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates Pistil- Female reproductive part of a flower Blade- the broad portion of a leaf as distinct from the petiole 1. Petiole- the stalk that joins a leaf to a stem Stipules- Midrib- The central or principal vein of a leaf Vein- the vascular tissue of the leaf Small Netted Vein- Stomata- One of the tiny openings in the epidermis of a plant, through which gases and water vapor pass. Stomata permit the absorption of carbon dioxide necessary for photosynthesis from the air, as well as the removal of excess oxygen.