To trace: The pathway of water and mineral ions from the soil through the various root tissues, also distinguish between the symplast and apoplast. Introduction: The underground branching root systems are often more extensive than aerial part of plant. The extension of root depth and spread of a plant differ for another plant species and it also varies among individuals of same species. For the survival of plant, firm anchorage is essential so that the stem remains upright that enable leaves to absorb sunlight efficiently. The roots absorb water and dissolved minerals. The dissolved minerals are transported from roots to the leaves throughout the plant in the xylem.

Question

Explain the alternative routes for the uptake of water and dissolved nutrients in roots. Highlight the processes and structures involved.

Answer 1

Question

Chapter 36.1, Problem 3LO

Summary Introduction

To trace: The pathway of water and mineral ions from the soil through the various root tissues, also distinguish between the symplast and apoplast.

Introduction: The underground branching root systems are often more extensive than aerial part of plant. The extension of root depth and spread of a plant differ for another plant species and it also varies among individuals of same species. For the survival of plant, firm anchorage is essential so that the stem remains upright that enable leaves to absorb sunlight efficiently. The roots absorb water and dissolved minerals. The dissolved minerals are transported from roots to the leaves throughout the plant in the xylem.

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Explain the alternative routes for the uptake of water and dissolved nutrients in roots. Highlight the processes and structures involved.

Make a simple HAND DRAWN sketch or flow diagram toillustrate the flow path of water through a plant, from the point of uptake from the soil totranspiration from the leaves. Ensure that you incorporate the following aspects in your sketch / diagram:• Water movement from the soil into the root, to the vascular tissues and the rest of theplant and into the atmosphere.• Label all the organs, tissues and structures involved in water uptake and transport.• Mention the mode of water movement (e.g. diffusion, osmosis, mass flow) whereapplicable along the symplastic and apoplastic pathways of water uptake and transport

6) Match the tissue on the left with the description of the function it generally performs for the plant on the right: a) phloem flexible support, such as in petioles and herbaceous stems. b) xylem forms an outer barrier for leaves, young stems and roots. c) collenchyma conducts water and dissolved nutrients from the roots to other plant tissues. support of vascular tissue in older woody plants and formation of very hard plant structures such as nut shells. d) periderm e) parenchyma metabolism and storage. f) sclerenchyma conducts molecules produced by the plant throughout the plant body. g) epidermis provides physical protection for woody plants. AP ACMI