In which of the following xylem lacks vessels while phloem is devoid of companion cells?

Pinus

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Rhizopus

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Euglena

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Spirogyra

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Solution

The correct option is A Pinus
Companion cells are specialised parenchyma cells which are present adjacent to a sieve tube in the phloem of flowering plants. These cells are present in the angiosperms. These cells are absent in the pteridophytes and gymnosperms. Pinus is a gymnosperm and is devoid of the companion cell. The xylem of gymnosperms consists of tracheids for conducting sap as vessels are absent.
Thus, the correct answer is option A.

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