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Q: What is the function of protoxylem?
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What are xylem and ploem?

Protoxylem is the first part of the primary vascular tissue in plants called xylem that matures. Its function is to transport water to the shoot in the early stages of the growth of the plant.Metaxylem is a part of primary xylem that differentiates after the protoxylem.


What is the function of passage cells in the endodermis of root?

In endodermis the passage cells passes the water molecules from the cortex to the protoxylem. Passage cells prevent the re entry of water molecules into the cortex.


What are the three types of Xylem?

There are only two types of xylems, 1. Protoxylem and 2. metaxylem


What is exarch and endarch xylem?

When protoxylem is pointing towards periphery it is called exarch xylem and when it is pointing towards the center, it is called endarch.


What is plant plumbing?

Water pipes, formed by the walls of dead cells, ensure the efficient transport of water and solutes in the xylem of vascular plants. In elongating plant organs such as the hypocotyl, which lifts the growing tip of the germinating seedling out of the soil, the passive elongation of dead and empty protoxylem elements by surrounding live tissue maintains a functional water-conducting system. Now, Ulrich Ryser and co-workers use confocal laser scanning microscopy to investigate a new structural element in the cell wall of protoxylem cells in hypocotyls . This structural element, which contains glycine-rich proteins , is initially deposited in the corners of cells along the longitudinal axis of the protoxylem, where it is associated with the pectin polysaccharide rhamnogalacturonan I. The authors show that the polysaccharide-rich wall of living and elongating protoxylem is gradually replaced by GRP-containing cell wall material, which develops into a complicated 3D network that seems to stabilize the protoxylem. They also report that GPR-related sequences are found in many seed plants, leading them to suggest that GRP-rich walls originated early in seed plant evolution.


Conducting tissues in plants which carry water and dissolved nutrients upward?

The xylem is the conducting tissue in vascular plants which carry water and nutrients upward. The xylem is made up of protoxylem and metaxylem.


What are the six functions of language?

The six functions of language are expressive (to express thoughts and feelings), directive (to give commands or requests), informative (to provide information), phatic (to establish social contact), aesthetic (to create beauty or evoke emotions), and metalinguistic (to discuss language itself).


A formula prewritten by excel is called?

Function


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


What is the parent function for the exponential function?

The parent function of the exponential function is ax


What function tests a specific condition in Excel?

The IF function is the main function to do it and you can also use other logical functions, like the AND function, the OR function or the NOT function.


What function in Microsoft Excel 2003 to write the amount in word?

Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.Such a function does not exist for English. A function call BAHTTEXT will do it for the Thai language.