. Botany for high schools. Botany. 14. The seed.—A seed is a plant structure composed of the embryo plant surrounded by the seed coats. The seed coats are formed from the walls of the ovule. The seed is capable, by the growth of the embryo, of produc- ing a plant similar to the parent. The embryo is made up of the three principal parts of the plant, the root, stem and leaf, but these parts are in a very rudimentary form. Squash, pea, bean, castor bean and apple seeds are examples of clearly defined seeds. The shell of the squash or apple seed or the membrane which can be slipped off from a pea
. Botany for high schools. Botany. 14. The seed.—A seed is a plant structure composed of the embryo plant surrounded by the seed coats. The seed coats are formed from the walls of the ovule. The seed is capable, by the growth of the embryo, of produc- ing a plant similar to the parent. The embryo is made up of the three principal parts of the plant, the root, stem and leaf, but these parts are in a very rudimentary form. Squash, pea, bean, castor bean and apple seeds are examples of clearly defined seeds. The shell of the squash or apple seed or the membrane which can be slipped off from a pea or bean after being thor- oughly soaked in water, is made up of the seed coats. The entire content of the squash or almond seed is the embryo. 15. Food stored in the seed.—Nearly all seeds have food stored in them to furnish nutriment for the embryo plant from the time of germination Fig. 21. White-pine seedling casting seed coats. until the seedling has established itself in the earth, where it can obtain its food from the outside. In the squash, bean, pea, etc., the food is stored up in the two first seed leaves (cotyledons) which make the bulk of the embryo and are easily recognized as the two fleshy halves. In other seeds, as in the castor bean, the corn, wheat, etc., the food is stored around, or at one side of. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
