. Elementary biology; an introduction to the science of life . H Fig. 6. Embryos of plants /, diagram showing relative positions of the parts of the embryo ; 2, embryo of peanut; S, embryo of pea; 4, embryo of pine ; C, C, cotyledons; E, epicotyl; H, hypocotyl to the root. The rest of the main stalk, with its outgrowths, corresponds to the shoot. The upper end may be enlarged at the tip into a tiny knob or bud; in the bean embryo we can make out two little leaves folded neatly over each other. The two fleshy leaves are called seed leaves, or cotyledons. The part below the meeting point, someti
. Elementary biology; an introduction to the science of life . H Fig. 6. Embryos of plants /, diagram showing relative positions of the parts of the embryo ; 2, embryo of peanut; S, embryo of pea; 4, embryo of pine ; C, C, cotyledons; E, epicotyl; H, hypocotyl to the root. The rest of the main stalk, with its outgrowths, corresponds to the shoot. The upper end may be enlarged at the tip into a tiny knob or bud; in the bean embryo we can make out two little leaves folded neatly over each other. The two fleshy leaves are called seed leaves, or cotyledons. The part below the meeting point, sometimes called the radicle, is the hypocotyl, which means " below the ; The part above is called the first bud, or the plumule, or the epicotyl, which means "above the cotyledon " (Fig. 6). Although the cotyledons are considered to be leaves, they do not in all plants become flat and green like the more familiar leaves. In many cases they do not even come above the ground during the young plant's development, as in the pea plant.
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology
