Nature, Količina 92Sir Norman Lockyer Macmillan Journals Limited, 1913 |
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Stran 246
... hypocotyl , and root , the plumular bud being still rudimentary . The primary root lies as a rule in a straight line with the primary stem , or hypocotyl . The hypocotyl is commonly the first part of the embryo to lengthen , and then ...
... hypocotyl , and root , the plumular bud being still rudimentary . The primary root lies as a rule in a straight line with the primary stem , or hypocotyl . The hypocotyl is commonly the first part of the embryo to lengthen , and then ...
Stran 247
... hypocotyl and in the base of the cotyledon . But he considers that this external xylem belongs to the primitive structure of hypocotyl and cotyledon as well as to that of the root . We have already said that the vascular system of ...
... hypocotyl and in the base of the cotyledon . But he considers that this external xylem belongs to the primitive structure of hypocotyl and cotyledon as well as to that of the root . We have already said that the vascular system of ...
Stran 248
... hypocotyl of a fairly old seedling to be a true stele , but one belonging to a later phase of evolution than that of the root , and not , therefore , strictly homologous with it in the sense in which the earliest vascular formations in ...
... hypocotyl of a fairly old seedling to be a true stele , but one belonging to a later phase of evolution than that of the root , and not , therefore , strictly homologous with it in the sense in which the earliest vascular formations in ...
Vsebina
Hurry Dr J B Ideals and Organisation of a Medical | 13 |
Hurst Major C C Genetics 490 | 63 |
Shipley Dr A E Guy A K Marshall Fauna of British Sullivan M X and F R Reid Soil Catalysis 560 | 85 |
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acid æther agricultural algæ animals appears applied atom British Association carbon Carboniferous cell cent chemical chemistry College comet committee connection cotyledon course deal described discovery discussion edition effect electric engineering experimental experiments fact genus geological given helium Hermann et Fils homoplasy hydrogen hypocotyl illustrated important Institute interest investigation J. J. Thomson laboratory lambdoid suture larvæ lectures limestone lines London magnetic matter ment metal method molecule Museum National Physical Laboratory nature November observations obtained October oolitic Ordovician organic origin paper physical Piltdown plants plates practical present Price problem Prof published radio-active radium recent reference regard region rocks Royal Society scientific Solenopora South species specimens spectra structure telegraphy temperature theory tion tubes University velocity volume xylem