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Xylem and Phloem Tissues MCQs for Competitive Exams

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Xylem and Phloem Tissues MCQs for Competitive Exams

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Topic Notes: Xylem and Phloem Tissues

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Quick Overview

Xylem and Phloem Tissues MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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31
In which group of plants are companion cells typically associated with the phloem?
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32
Which of the following plant disease symptoms is characterized by a permanent loss of turgor pressure, eventually leading to the death of the plant?
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33
What is the primary function of phloem tissue in vascular plants?
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34
What are the balloon-like outgrowths of parenchyma cells that protrude into the lumen of xylem vessels, typically occurring in response to injury or aging?
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35
During the maturation of sieve plate elements in phloem, which substance is deposited as a cylinder around the cytoplasmic strands?
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36
In which plant groups are xylem vessels (tracheae) typically absent?
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37
Which of the following cell types are considered the principal components of xylem tissue?
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38
Which specific cell type is characteristically absent in the secondary phloem of gymnosperms?
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39
In which type of xylem parenchyma distribution are the parenchyma cells found scattered individually among the fibers and tracheids?
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40
Which specialized plant cells possess thick, lignified walls and are primarily responsible for water conduction and structural support?
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