Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 27, Problem 3CT
Summary Introduction
To explain: The reason why the roots lack the protective covering like the plant surface which has a waxy cuticle.
Concept introduction: Root is the plant part that typically lies below the soil surface. The root system is the extensive of the shoot system. The important function of the roots include taking up water (H2O) and mineral ions from the soil, anchor the plant to the soil, and store nutrients in some cases.
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Aboveground plant surfaces are typically covered with cuticle. Why do roots lack this protective coating?
Why is it that the wall of the epidermis in the root area has no cuticle and has thin walls?
The mature regions of roots are relatively impermeable to water. Why? Explain its importance.
Chapter 27 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
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- What type of roots would form a “sod” or turf?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_forwardShow the sequence of secondary growth by drawing the row of cells from the boxed area below and labeling the vascular cambium cell (V), 5 xylem cells from oldest (X1) to youngest (X5), and 3 phloem cells (P1 to P3). Show what happens after growth continues by drawing and labeling a row with twice as many xylem and phloem cells. How does the vascular cambium’s location change? A pear has a hard texture but juicy. State two cells that give the characteristics? State the function of the transitional epithelium found in the mammalian urinogenital system. (i) Identify type of tissue lines the air sacs of the lungs. (ii) Explain how the tissue named in (i) adapted to its function.arrow_forward
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- Why are monocot roots slender and diffuse in appearance?arrow_forwarddicot examine the type of stomata in relation to the arrangement of epidermal cells present. identify the stomata exhibited label the ordinary epidermal cells (pavement cells), subsidiary cells, guard cells, and stomatal pore.arrow_forwardPlant roots develop differently from plant shoots during primary growth. Explain: How is the formation of lateral roots different from making new branches on shoots? Why don't roots and shoots generate new primary growth the same way?arrow_forward
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