explain why?
1. water can reach upto endoderm through apoplast but it moves true through the endodermis by symplast
2. primary xylem is root is exarch and in stem it is endarch
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Hyy Dude
1) Transport through apoplast is fast as water does not needs to cross the plant cell. ... Like that water reaches upto the layer of endodermis. The endodermal cells have casparian strips, which makes it impossible for water to move further through apoplastic pathway. At the endodermis, water passes through symplast.
2). Xylem is described as exarch. Polyarch - Primary xylem of root with a large number of protoxylem strands. When protoxylem is pointing towards periphery, it is called as exarch xylem and when it is pointing towards the centre, it is called as endarch..
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