Concept explainers
To explain: The reason for which the secondary growth portion of the root is no longer involved in absorption once the secondary growth occurred.
Introduction: Roots and stems of plants are produced with secondary growth. Gymnosperms and woody eudicots have primary growth at apical meristem and at lateral meristem, the secondary growth occurs. The secondary tissue is produced as a result of the activity of two lateral meristems, namely the cork cambium and vascular cambium.
To explain: The region where the absorption of water and dissolved minerals occur in plants that have roots with secondary growth.
Introduction: Roots and stems of plants are produced with secondary growth. Gymnosperms and woody eudicots have primary growth at apical meristem and at lateral meristem, the secondary growth occurs. The secondary tissue is produced as a result of the activity of two lateral meristems, namely the cork cambium and vascular cambium.
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Biology (MindTap Course List)
- Explain the reason why the roots lack the protective covering like the plant surface which has a waxy cuticle.arrow_forward6) 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 ACMIarrow_forwardA Vhet do we call the structures found on the root epidermis that increase the plant's capacity absorb water? d) Briefly explain how the structures you mentioned in c) increase the plant's capacity to absort water. e) Complete the table below: Transport method for water Transport method for (passive / active?) Root Tissue minerals (passive/activ Epidermis: Active Cortex: Active Endodermis: Active Xylem:arrow_forward
- Secondary growth in stems involves two meristems. Identify and describe these two meristems, explain what tissues they are responsible for producing (including their functions), and explain the direction of cell division in which those tissues are produced in relation to the epidermis. For the last part of this question referring to the direction of cell division, make sure to address why cell division is occurring in two different planes. Also, as part of your answer, name and explain the functions of the tissues from the center of the stem to the dermal layer, in order, for a stem conducting secondary growth.arrow_forwardWhich of the following statements are true for root endodermis?I. Endodermal cells constitute the innermost layer of root cortex and surrond the vascular cylinder (xylem and phloem). II. Endodermal wall is covered with waxy layer of casparian strip which blocks apoplastic transfer of minerals.III. Due to presence of casparian strip, water and minerals can only eneter the vascular cylinder if they will be able to cross the plasma membrane of an endodermal cell.arrow_forwardPlant roots have devised in such a manner that they can control over the ions that enter into the water conducting tissue system. Write the location and chemical composition of specific region of plant roots, which make it possible and briefly discuss its importance.arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning