. Elementary biology; an introduction to the science of life . larger. When the seeds are ripe, the ovary has become the fruit. But the changing of ovules into seeds is not simply a matter of growth. Every farmer and gardener knows that it is possible to have a good lot of flowers or blossoms with a very poor crop of fruit, although the conditions for the growth of the plants may be of the Fig. 132. Structure'of a flower The outer set of covering leaves, ^, (7, is called the calyx : the single parts are sepals. The inner layer, /', b. is the corolla ; its parts are the feials. The central orga
. Elementary biology; an introduction to the science of life . larger. When the seeds are ripe, the ovary has become the fruit. But the changing of ovules into seeds is not simply a matter of growth. Every farmer and gardener knows that it is possible to have a good lot of flowers or blossoms with a very poor crop of fruit, although the conditions for the growth of the plants may be of the Fig. 132. Structure'of a flower The outer set of covering leaves, ^, (7, is called the calyx : the single parts are sepals. The inner layer, /', b. is the corolla ; its parts are the feials. The central organ is the fist'il\ the main body of the pistil, f^ is the ovary and contains one or many little structures {ovules) capable of becoming seeds. The tip, e, of the pistil is the stigma; this is connected with the ovary by the style c. Surrounding the pistil are a number of stamens, d, consisting of a stalk, h, called the filament, and an enlarged capsule, g, called the anther. This con- tains a of cells which can be thrown out, /: these loosened cells are called pollen best, and although there may be no sign that there is anything diseased or out of order with the plants.
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
