Plant Growth and DevelopmentHard

Question

Highest auxin concentration occurs

Options

A.in growing tips
B.in leaves
C.at base of plant organs
D.in xylem and phloem

Solution

Boyesn-Jensen (1913), Paal (1919) and Went (1928) while working on oat coleoptile tip demonstrated that stem tip is the seat of growth regulating centre. Auxin shows polar transport from stem apex to base and from these to root apex.

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