. Essentials of biology presented in problems. Biology. IV. FLOWERS AND THEIR WORK Problem VI. The structure and work of the parts of a flower. {.Lahoratory Manual, Prob. VI.) Structure of a Simple Flower. — Flowers of different kinds of plants vary greatly in size, shape, and color. In our study of the flower our problem will be primarily to find out the use of the flower to the plant which produces it. To solve this problem we must first learn something of the structure and uses of the parts of a very simple flower. Examples of such flowers are the evening primrose and the sedum (live-foreve
. Essentials of biology presented in problems. Biology. IV. FLOWERS AND THEIR WORK Problem VI. The structure and work of the parts of a flower. {.Lahoratory Manual, Prob. VI.) Structure of a Simple Flower. — Flowers of different kinds of plants vary greatly in size, shape, and color. In our study of the flower our problem will be primarily to find out the use of the flower to the plant which produces it. To solve this problem we must first learn something of the structure and uses of the parts of a very simple flower. Examples of such flowers are the evening primrose and the sedum (live-forever), both of which are plentiful in the fall. The Floral Envelope. — In such a flower the expanded portion of the flower stalk, which holds the parts of the flower, is called the receptadEj {The five green leaflike parts coverinm (^Ae unopened flower are called the ^'iepalsj Sometimes the sepals are all joined or united in one piece. Taken together, they are called the calyx. The sepals come out in a circle or whorl on the flower stalk. \fhe more brightly colored structures are the petalsM Thev form the rf/j-nlJjf. The cortjUa is of importance, as we shall see later, in making tb^ flowen*conspicuous. i^The Essential Organs.— A flower, however, could live without sepals or petals and still do the work for which it exists. The essential organs of the flower are within the so-called floral en- velope. They consist of the stamens and carpels (or pistil), the 34. A flower of the sedum, from the side, considerably enlarged ; A, anther of stamen ; C, car- pel ; F, filament; P, petal; S, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunter, George William, 1873-1948. New York, Cincinnati [etc. ] American Book Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1911
