FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Xylem is a conducting tissue for water and minerals from roots to the upper parts of the plant. Which of the following statement about Xylem is correct?
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In flowering plants sieve tube and tracheids are the main water transporting elements
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Xylem is composed of tracheids, vessels, sieve tube and xylem fibres
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Vessels are present in Gymnosperms and not in Angiosperms
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Tracheids are dead, tube like cells with thick lignified tapering ends
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Explanation:
Detailed explanation-1: -Structure of Tracheid Cells The secondary cell wall is heavily lignified, and the cells are angular and polygonal in cross-section. The Tracheid is 5–6 mm long on average. Pits perforate a large portion of the cell wall of Tracheids. They also have pit pairs on their common walls between two neighbouring Tracheids.
Detailed explanation-2: -Xylem and Phloem are called conducting tissues because they are involved in the conduction of water and the food. Xylem is responsible for the conduction of water absorbed by the roots to different parts of the plant. Whereas phloem conducts food prepared in the leaves to various parts of the plant.
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