When protoxylem is pointing towards periphery it is called exarch xylem and when it is pointing towards the center, it is called endarch.
THE centripetal xylem in the stem among the vascular plants is confined to the Pteridophyta and lower gymnosperms, the Pteridospermæ and the Cordaitales. The vegetative stem of Cycadales and Coniferales lacks centripetal xylem; but it occurs in a poorly developed condition in certain conservative regions like the reproductive axes and the leaf traces. In the Gnetales and the angiosperms the axial organs show exclusively the endarch condition, and the centripetal xylem is altogether absent from the primary vascular bundles.
This is the vascular tissue xylem.
The Xylem of a plant transports water and some nutrients.
The Xylem of a plant transports water and some nutrients.
Xylem
THE centripetal xylem in the stem among the vascular plants is confined to the Pteridophyta and lower gymnosperms, the Pteridospermæ and the Cordaitales. The vegetative stem of Cycadales and Coniferales lacks centripetal xylem; but it occurs in a poorly developed condition in certain conservative regions like the reproductive axes and the leaf traces. In the Gnetales and the angiosperms the axial organs show exclusively the endarch condition, and the centripetal xylem is altogether absent from the primary vascular bundles.
An Exarchate in any Orthodox Church is the area of jurisdiction of an Exarch. An Exarch is a cleric who has been appointed by his Patriarch to represent the Patriarch in another country or area. For example, the Russian Patriarch may appoint an Exarch in Jerusalem, and then Jerusalem becomes part of the Exarchate of the Moscow Patriarchate. The Exarch then acts as the Patriarch's representative in that area (called the Exarchate).
Exarch of Bulgaria Ioann has written: 'Das Hexaemeron des Exarches Johannes' -- subject(s): Church Slavic language, Creation, Texts
An eparch is equivalent to a bishop in the Eastern Orthodox and Eastern Catholic Churches, while an exarch is a bishop with authority over a specific area outside the bishop's own diocese. An exarch typically has jurisdiction over a particular region or group of churches that are not part of the bishop's own diocese.
In a dicotyledonous root - in the centre of the rootIn a dicotyledonous stem - in bundles near the edge of the stemIn a dicotyledonous leaf - forms a network that supports softer leaf tissue
Vascular plants have xylem
Water is transported by the xylem.
This is the vascular tissue xylem.
In Angiosperms , it is xylem vessels ( proto and meta xylem together ) , Xylem sclerenchyma and xylem parenchyma ; together form Xylem tissue ( That is why xylem is called a compound tissue ). In Gymnosperms , xylem vessels are replaced by Xylem tracheids . All other tings are almost the same .
Xylem cells are in plants not animals.
Xylem is a one way flow
Xylem is a one way flow