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(C) Companion cells are specialized parenchymatous cells that are closely associated with sieve tube elements in the phloem of angiosperms. They are c

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Sieve elements

Vedclass · Answer

(C) Companion cells are specialized parenchymatous cells that are closely associated with sieve tube elements in the phloem of angiosperms. They are connected to the sieve tube elements by pit fields present between their common longitudinal walls. Companion cells maintain the pressure gradient in the sieve tubes and help in the translocation of food materials.

Column-$I$	Column-$II$
$P$. Parenchyma	$I$. No thickening
$Q$. Collenchyma	$II$. Pectin thickening
$R$. Sclerenchyma	$III$. Lignin thickening

Companion cells are closely associated with . . . . . . .

Similar Questions

Match the following columns:

Column-$I$ Column-$II$

$P$. Parenchyma $I$. No thickening

$Q$. Collenchyma $II$. Pectin thickening

$R$. Sclerenchyma $III$. Lignin thickening

Collenchyma is

In which of the following are bordered pits found?

$A$ mature sieve tube differs from a vessel in:

Give differences: Sieve cell and Sieve tubes.

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