I. Made up of sclerenchymatous cellsII. Gener | vedclass

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(A) Phloem fibres (bast fibres) are made up of sclerenchymatous cells.These are generally absent in the primary phloem but are found in the secondary

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Phloem fibre

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(A) Phloem fibres (bast fibres) are made up of sclerenchymatous cells.These are generally absent in the primary phloem but are found in the secondary phloem.These are much elongated,unbranched,and have pointed,needle-like apices.The cell wall of phloem fibres is quite thick.At maturity,these fibres lose their protoplasm and become dead.Phloem fibres of jute,flax,and hemp are used commercially.

$I.$ Made up of sclerenchymatous cells
$II.$ Generally absent in primary phloem
$III.$ Much elongated and pointed
Given above characters belong to which of the following?

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$I.$ Made up of sclerenchymatous cells$II.$ Generally absent in primary phloem$III.$ Much elongated and pointedGiven above characters belong to which of the following?