. Botany for young people and common schools : how plants grow, a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants both wild and cultivated : illustrated by 500 wood engravings . Botany. MODE Op life in annuals and biennials. 27 height of a man. And if they reach this size, it is not as a single main trunk, but by a cluster of stems all starting from the ground. • 66. Trees are woody plants rising by a trunk to a greater height than shrijbs. 67. Herbs are divided, according to their character and duration, into Annuals, Biennia
. Botany for young people and common schools : how plants grow, a simple introduction to structural botany : with a popular flora, or an arrangement and description of common plants both wild and cultivated : illustrated by 500 wood engravings . Botany. MODE Op life in annuals and biennials. 27 height of a man. And if they reach this size, it is not as a single main trunk, but by a cluster of stems all starting from the ground. • 66. Trees are woody plants rising by a trunk to a greater height than shrijbs. 67. Herbs are divided, according to their character and duration, into Annuals, Biennials, and Perennials. 68. Animals grow from the seed, blossom, and die all in the same season. In this climate they generally spring from the seed in spring, and die in the autumn, or sooner if they have done blossoming and have ripened their seed. Oats, Barley, Mustard, and the common Morning-Glory (Fig. 4) are familiar annuals. Plants of this kind have fibrous roots, i. e. composed of long and slender threads or fibres. Either the whole root is a cluster of such fibres, as in Indian Corn (Fig. 48), Barley (Fig. 56), and all such plants ; or when there is a main or tap root, as in Mustard, the Morning-Glory, &c., this branches off into slen- der fibres. It is these fibres, and the slender root-hairs which are fomid on them, that mainly absorb moisture and other things from the soil; and the more numerous they are, the more the plant can absorb by its roots. As fast as nourishment is received and pre- pared by the roots and leaves, it is expended in new growth, par- ticularly in new stems or branches and new leaves, and finally in flowers, fruit, and seed. The latter require a great deal of nour- ishment to bring them to perfection, and give nothing back to the plant in return. So blossoming and fruiting weaken the plant very fibrous roon. much. Annual plants usually continue to bear flowers, often in great numbers, upon every branch, until they exhaust themselves and die,
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectbotany, bookyear1864
