CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Xylem is composed of all of the following cell types EXCEPT:
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tracheids
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vessel elements
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fibres and parenchyma
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sieve tube elements
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Explanation:
Detailed explanation-1: -Sieve tubes and companion cells are components of xylem tissue.
Detailed explanation-2: -Companion cells are not a constituent of Xylem. Companion cell are type of cell found within the Phloem of flowering plants. They are not found in Xylem.
Detailed explanation-3: -The xylem consists of tracheary elements, xylem parenchyma cells, and xylem fiber cells.
Detailed explanation-4: -Tracheids, vessels, xylem fibers, and xylem parenchyma are the four types of elements that make up the xylem.
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