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Question

Which of the following is absent in phloem of Pinus?

A
Phloem parenchyma
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B
Sieve cells
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C
Companion cells
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D
All of the above
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Solution

The correct option is C Companion cells
Sieve tube member is associated with one or more specialized parenchyma cells called as companion cells are seen only in angiosperms. Both, sieve tube member and companion cell, are derived from the same meristematic cell. These cells provide energy for food conduction. The role of conduction of food material is done by seive cells in Pinus
Thus, the correct answer is option C.

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