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Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYAnatomy of Flowering Plants1 Mark
Question
Why do the primary and secondary phloems get crushed as secondary growth advances?
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Answer

Due to the continued formation and accumulation of a large quantity of secondary xylem, the thin-walled phloem cells get crushed.

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