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Question
Centrifugal xylem occurs in
Centrifugal xylem occurs in
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Solution
The correct option is C Stem
Xylem elements of the stem differentiate centrifugally, thus protoxylem, produced first by the procambium, face the axis of the stem, so the xylem is endarch. In contrast, differentiation of phloem elements is centripetal (i.e. inside out), thus the youngest protophloem elements are in the outermost region of the phloem (exarch phloem). So, the correct answer is 'Stem.'
Xylem elements of the stem differentiate centrifugally, thus protoxylem, produced first by the procambium, face the axis of the stem, so the xylem is endarch. In contrast, differentiation of phloem elements is centripetal (i.e. inside out), thus the youngest protophloem elements are in the outermost region of the phloem (exarch phloem).
So, the correct answer is 'Stem.'
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