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What is centripetal 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.
What are the tubes called in plants the carry water into the plant?
This is the vascular tissue xylem.
Which is a transport in a xylem plant?
The Xylem of a plant transports water and some nutrients.
Which is transported in the xylem of plant?
The Xylem of a plant transports water and some nutrients.
A plant grows in soil that has been contaminated with toxins. Through which structure would the toxins first spread into the plant?
Xylem
What is centripetal 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.
What is an Exarchate in the Russian Orthodox church?
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).
What has the author Exarch of Bulgaria Ioann written?
Exarch of Bulgaria Ioann has written: 'Das Hexaemeron des Exarches Johannes' -- subject(s): Church Slavic language, Creation, Texts
What is the difference between eparch exarch?
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.
Identify the positions of xylem and phloem tissues as seen in transverse sections of unthickened herbaceous dicotyledonous roots stems and leaves?
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
Xylem have what?
Vascular plants have xylem
What is trasported by the xylem?
Water is transported by the xylem.
What are the tubes called in plants the carry water into the plant?
This is the vascular tissue xylem.
How many types of elements together make up the xylem tissue?
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 .
What is the common name for secondary xylem?
primary xylem is primary in nature & is derived from procambium. But secondary xylem is secondary in nature and derived from fascicular cambium and interfascicular cambium. Primary xylem is differentiated into protoxylem and metaxylem, but secondary xylem has no such differentiation. In primary xylem vessels and tracheids are long and narrow, and vessels don't have tyloses, but in secondary xylem, vessels are blocked by tyloses, and vessels and tracheids are wider and shorter. Xylem fibres are more abundant in secondary xylem , and found in small numbers in primary xylem. Also unlike in primary xylem, secondary xylem has differentiated into sapwood & heartwood.
What are tubes that carry fluids from the roots up to leaves of vascular plants?
xylem and phloem
What are two kind of xylem and their functions?
1. Centripetal xylem 2. Centrifugal xylem both types are involved in conduction
