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Water Absorption and Transpiration MCQs for Competitive Exams

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Water Absorption and Transpiration MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

102 MCQs Page 1

Topic Notes: Water Absorption and Transpiration

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Water Absorption and Transpiration MCQs in Agriculture 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.

Attempt the questions page by page, check the correct answers, read the explanations where available, and compare your weak areas with past papers and mock test performance. Consistent MCQ practice improves speed, confidence, and retention for objective exam sections.

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1
Which substance acts as a carrier during the active absorption process in plants?
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2
Which chemical compound is known to induce stomatal closure in plants?
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3
What is the fundamental difference between active and passive transport mechanisms across a cell membrane?
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4
What approximate percentage of the total water absorbed by a plant is lost through transpiration?
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5
Which researchers are credited with proposing the cohesion-tension theory for water transport in plants?
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6
Which instrument is utilized to measure the rate of transpiration in plants?
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7
Which plant tissue is primarily responsible for the translocation of synthesized food from leaves to other plant parts?
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8
Who proposed the mass flow hypothesis to explain phloem transport?
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9
What is the physiological term for the loss of turgidity and subsequent drooping of plant tissues due to water deficiency?
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10
Under what environmental conditions is root pressure at its maximum level?
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