Which of the following is a dead cell?

Phloem cell

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Sieve tube

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Companion cell

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Phloem parenchyma

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Solution

The correct option is A
Phloem cell

Sieve tubes are tubular cells with perforated walls. They are living but do not have a nucleus and are the important component of phloem. Phloem parenchyma and companion cells are elements of phloem and both are living cells. Phloem fibres also called as bast fibres are the only dead cells present in the phloem.

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Similar questions

Which of the following is living but non-nucleated ? a) phloem cell b) sieve tube c) companion cell d) phloem parenchyma

Question 22
The dead element present in the phloem is

(a) companion cells
(b) phloem fibres
(c) phloem parenchyma
(d) sieve tubes

Q. Read the following statements:

(i) The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls.
(ii) Phloem parenchyma is made of elongated non-tapering cylindrical cells that have a scanty cytoplasm.
(iii) Phloem fibers are made of parenchymatous cells.
(iv) Companion cells help in maintaining the pressure gradient in the sieve tube.
(v) The phloem parenchyma stores food material and other substances like resins, latex, and mucilage.

How many of the given statements are correct?

Both phloem sieve tube cells and xylem vessel cells are derived from same kind of precursor cells but at maturity they are different. What feature is unique to phloem sieve tube cells?

Sucrose enters a phloem sieve-tube cell because of:

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