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Water Transport and Transpiration MCQs for Competitive Exams

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Water Transport and Transpiration MCQs for Competitive Exams

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

127 MCQs Page 2

Topic Notes: Water Transport and Transpiration

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Quick Overview

Water Transport and Transpiration 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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11
Which physiological process is primarily responsible for the absorption of water by plant root hairs?
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12
What is the primary cause of bitter-pit disease in apples?
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13
What term describes the combined gravitational, adsorptive, and hydrostatic forces that retain water within the soil matrix?
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14
Evaluate the following statements regarding transpiration and guttation: 1. Transpiration occurs during the day, while guttation occurs at night. 2. Transpiration releases water as vapor, whereas guttation releases liquid water. 3. Transpiration water is pure, while guttation water contains dissolved salts and sugars. 4. Transpiration is a regulated physiological process, while guttation is a passive, uncontrolled process. Which statements are accurate?
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15
Temporary wilting occurs when soil moisture is adequate, but the plant loses turgor because the rate of transpiration exceeds what other physiological process?
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16
Which physiological process in plants involves the release of excess water in the form of liquid droplets from the leaf margins or tips?
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17
What is the botanical term for plants that have evolved to thrive in arid or dry environments?
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18
Which method for measuring water potential relies on the principle that a tissue will neither gain nor lose water when the surrounding air's vapor pressure matches the tissue's water potential?
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19
What is the magnitude of the pressure generated when water is adsorbed by a confined imbibant?
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20
Which physiological conditions promote the process of guttation in plants?
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