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Question

The conducting cells of xylem are?


A

Companion cells

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B

Tracheary elements

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C

Sieve elements

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D

All of these

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Solution

The correct option is B

Tracheary elements


The correct option is B.
Explanation for the correct option:

  1. Cells in the xylem known as tracheary elements (TEs) are highly specialized for carrying water and other solutes up the plant.
  2. Specification, expansion, patterned cell wall deposition, planned cell death, and cell wall removal are all parts of the fairly well-defined differentiation process that TEs go through.

Explanation for the incorrect option:
Option A:

  1. The companion cells are unique parenchyma cells found in blooming plants.
  2. These are affixed to each sieve tube and work to facilitate the movement of nutrients.

Option C:

  1. The sieve tube components—elongated, specialized cells that are joined at the ends to form the sieve tube—are found in the phloem tissue of flowering plants.

Option D:

  1. Tracheids and vessels are made up of treacherous parts called conducting cells of the xylem.

Final answer: The conducting cells of the xylem are treachery elements.


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