BotanyWhich of the following statements is incorrect about companion cell ?

Which of the following statements is incorrect about companion cell ?

  1. A

    It is a specialisedparenchymatous cell

  2. B

    Its nucleus controls the function of sieve tube

  3. C

    It helps in maintaining the pressure gradient in sieve tube

  4. D

    It is present in all vascular plants having phloem

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    Solution:

    Companion cell are present in angiosperms whereas in pteridophytes and gymnosperms some small parenchymatous cells remain associated with sieve cells, which are known as albuminous cells.

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