Plasmodesmata is usually observed between

Sieve tubes and Bast fibre

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Trachea and Phloem fibres

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Xylem parenchyma and xylem fibres

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Sieve tubes and companion cells

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Solution

The correct option is D Sieve tubes and companion cells
Phloem is a complex permanent tissue that helps in the conduction of prepared food from the leaves to several parts of the plant.
Sieve tubes and companion cells are integral components of phloem.
Sieve tube members have no cell nucleus, ribosomes, or vacuoles.
Thus, they depend on companion cells to provide proteins, ATP, and signaling molecules.
In leaves, companion cells help move the sugar that is produced by photosynthesis from the mesophyll tissue into the sieve tube elements by plasmodesmata connections.
So, the correct answer is option D.

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Similar questions

Q. Consider the following statements
(a) Xylem transports water and minerals
(b) Gymnosperms lack sieve tubes and companion cells in phloem
(c) First formed primary xylem is called metaxylem
(d) Phloem fibres (bast fibres) are made of collenchyma
Of these statements

Question 22
The dead element present in the phloem is

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

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

Which of the following statements are correct?

(i) Companion cells are present in phloem.
(ii) Xylem transports water and minerals from roots to other parts of the plant.
(iii) Vessels of xylem are present in all plants.
(iv) Both xylem parenchyma and phloem parenchyma have nucleus.

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?

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