. Embryogenesis in plants. Embryology. Fig. 68. Embryonic development in a monocotyledon, Lininophyton obtusifoUiim (X 284, after Johri) in relation to the embryonic developments found in primitive dicoty- ledons (p. 252). They also suggest that the single cotyledon is not likely to be explained in terms of the abortion or suppression of one of the primordia in an initially or potentially dicotyledonous organisation. If we assume that the ancestors of the monocotyledons had two (or more) cotyledons, and that a critical genetical change, or series of changes, resulted in the monocotyledonous co
. Embryogenesis in plants. Embryology. Fig. 68. Embryonic development in a monocotyledon, Lininophyton obtusifoUiim (X 284, after Johri) in relation to the embryonic developments found in primitive dicoty- ledons (p. 252). They also suggest that the single cotyledon is not likely to be explained in terms of the abortion or suppression of one of the primordia in an initially or potentially dicotyledonous organisation. If we assume that the ancestors of the monocotyledons had two (or more) cotyledons, and that a critical genetical change, or series of changes, resulted in the monocotyledonous condition, then the ultimate problem is to consider how, at a certain stage in the dicotyledonous. 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 Wardlaw, C. W. (Claude Wilson), 1901-. London, Methuen; New York, Wiley
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