. 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. Stock Photo](https://c8.alamy.com/comp/RDWT5W/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-9koot-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-RDWT5W.jpg)
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. 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 detail.. 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 work.. Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.