The difference in the phloem of gymnosperms a | vedclass

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(C) In angiosperms,the phloem consists of sieve tube elements,companion cells,phloem parenchyma,and phloem fibres. In gymnosperms,the phloem consists

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Companion cells

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(C) In angiosperms,the phloem consists of sieve tube elements,companion cells,phloem parenchyma,and phloem fibres. In gymnosperms,the phloem consists of sieve cells,phloem parenchyma,and phloem fibres. Gymnosperms lack both sieve tubes and companion cells. Among the given options,the most significant functional and structural difference that distinguishes the phloem of angiosperms from gymnosperms is the presence of companion cells in angiosperms,which are absent in gymnosperms.

The difference in the phloem of gymnosperms and angiosperms is primarily due to the presence or absence of which of the following?

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$A$ : Sieve tubes and companion cells are related ontogenetically.
$R$ : Both develop from same mother cell.

Tracheids

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