. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 20 GROWING POINTS At the growing apex of the root four meristematic layers are often distinguishable. Three, the dermatogen, periblem, and plerome, serve the same purpose as in the stem; but external to the dermatogen is a fourth layer, the calyptrogen, which cuts off segments towards the outside only, and thus gives rise to the. Fig. 9.—Koot-tip of the Hyacinlli [SciUa] in longiludinal section showing the growing point and the root-cap. Sonic of the nuclei (blacl-;) cxliibit piliases in nuclear division (cf.
. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. 20 GROWING POINTS At the growing apex of the root four meristematic layers are often distinguishable. Three, the dermatogen, periblem, and plerome, serve the same purpose as in the stem; but external to the dermatogen is a fourth layer, the calyptrogen, which cuts off segments towards the outside only, and thus gives rise to the. Fig. 9.—Koot-tip of the Hyacinlli [SciUa] in longiludinal section showing the growing point and the root-cap. Sonic of the nuclei (blacl-;) cxliibit piliases in nuclear division (cf. p. 12). root-cap (Fig. q). The latter is constantly replenished liy the growing point, as the older cells in front become disorganised. In manj/ roots, however, the epidermis and root-cap arise from a common rncristematic layer, and there are other modifications of the growing point of the root \\hich it is nnnecessar}' to describe in 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 Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpl, booksubjectplants
