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Companion cells are closely associated with
A
Guard cells
B
Sieve elements
C
Vessel elements
D
Trichomes
Detailed Solution
Companion cells are specialised parenchyma cells closely associated with sieve tube elements in the phloem.
The two are connected by pit fields in their common walls, and the companion cells help maintain the pressure gradient in the sieve tubes.
The two are connected by pit fields in their common walls, and the companion cells help maintain the pressure gradient in the sieve tubes.