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  • Plant Physiology, Water Relations and Plant Nutrit
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BOT2603 Assignment 2 (COMPLETE ANSWERS) Semester 1 2026 - DUE 9 April 2026; 100% Correct solutions and explanations.

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BOT2603 Assignment 2 (COMPLETE ANSWERS) Semester 1 2026 - DUE 9 April 2026; 100% Correct solutions and explanations.Question 1 1.1 Briefly explain the following terms: 1.1.1. Essential element 1.1.2. Carbon partitioning 1.1.3. Sink activity 1.1.4. Critical concentration 1.1.5. Mucigel 1.2 Define mycorrhizae, citing the two main classes and the differences between them. 1.3 Explain the composition and role of humus in soil. Question 2 [20] (10) (5) (5) [30] 2.1 Give FIVE mineral nutrients that participate in enzyme activity and describe the ways in which each one influences how enzymes function. (10) 2.2 Compare the mechanisms of carrier proteins, channel proteins and ATPase proton pumps. 2.3 Describe the radial transport of water and solutes through the apoplast and symplast of the root to the xylem. (10) (10) [20] Question 3 3.1 Explain how commercial chelating agents work (mechanism) with regard to iron deficiencies in limy soils. (10) 3.2 Describe the cytosolic sucrose synthesis pathway. Total: 70 marks © UNISA 2026

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Paul J. Kramer, John S. Boyer Water Relations of Plants and Soils
Publisher: 1995 ISBN: 9780080924113 Edition: Unknown

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