The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category 'Performance'. has been performed in order to continue our previous researches on this species. This cookie is set by GDPR Cookie Consent plugin. An anatomical study on the root, stem and leaf of Geranium palustre Torner Cent. The cookie is used to store the user consent for the cookies in the category 'Other. Estimation of NPs in positive plant tissues. This cookie is set by GDPR Cookie Consent plugin. The mean residual autofluorescence in the root, stem and leaf samples from control plants was calculated to be 186.47, 253.48 and 436.04 respectively. The cookies is used to store the user consent for the cookies in the category 'Necessary'. This cookie is set by GDPR Cookie Consent plugin. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category 'Functional'. The cookie is used to store the user consent for the cookies in the category 'Analytics'. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. Principles of Inheritance and Variation.New Questions and Answers and Forum Categories So the primary vascular tissues of root and stem though apparently continuous merge with each other by changing one type of arrangement and structure to the other type. In contrast the stem shows collateral arrangement of primary vascular tissues with endarch protoxylem. In root the primary vascular tissues have independent strands of phloem and xylem that show alternate arrangement, the xylem being exarch. Continuity is also present in primary vascular tissues, but they do not merge directly because the orientation of primary vascular tissues is markedly different in root and stem. epidermis, cortex, endodermis, pericycle and secondary vascular tissues are directly continuous from root to stem. Internally also the tissues of axis, i.e. The plant that develops from the embryo axis shows externally a continuity of root and stem. Radicle and plumule form a continuous axial structure with the intervening tissues of hypocotyl and epicotyl. The portion between the insertion of cotyledon and radicle is the hypocotyl (hypo = below). Towards the lower end just below the insertion of cotyledon there occurs the primordium of root- the radicle. The portion between the insertion of cotyledon and plumule is the epicotyl (epi = above). Towards the upper end just above the insertion of cotyledon(s) there occurs the primordium of shoot-plumule.

An embryo is made up of one or two cotyledon(s). The differentiation of root and stem is initiated in the embryo axis.

Root stem and leaf