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Xylem

What do we ca...

Question

What do we call the element in xylem transport that is made of long, hollow, dead cells with wall pits?

A

Seive tubes

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B

Companion cells

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C

Trachieds

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D

Aerenchyma

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Solution

The correct option is C
Trachieds

Tracheids are one of two types of tracheary elements, vessel elements being the other and unlike vessel elements, tracheids do not have perforation plates.

Tracheids serve in the transport of water and mineral salts.

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Similar questions

Question 4
Which cell does not have perforated cell wall?

(a) Tracheids
(b) Companion cells
(c) Sieve tubes
(d) Vessels

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?

Q. Plant cells responsible for the transport of water are dead when they are mature enough to act as water transport tissues. These cells include which of the following cell types?
I. Tracheids
II. Vessel elements
III. Sieve tube members
IV. Companion cells

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

Q. Assertion :Vessels are the main water transporting elements and devoid of protoplasm Reason: Sieve tube elements are long tube -like structures , arranged longitudinally and are associated with the companion cells

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