BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 25, Problem 11SA
Summary Introduction
Introduction:
The function of the stem in plants is to provide support and position to leaves for photosynthesis. The function of roots in a plant is to transport water and minerals, store food (in some plants), and it also anchors in the soil.
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Root hairs____ . a. conduct water from cortex to aboveground shoots b. increase the root’s surface area for absorption c. anchor the plant in soil
Tissues Present, Primary Growth (enumerate from outermost-to innermost tissue layer; include unique tissue in the root)
a. Monocot root
b. Dicot root
Guard cellsa. are found primarily on the upper surface of leaves.b. open their stomata by shrinking.c. lack chloropolasts.d. close in response to abscisic acid.
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BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
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- Which 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_forwardIn roots, growth of lateral branches beginsa. on the root epidermis.b. on the root hairs.c. at the ground meristem.d. at the pericycle.arrow_forwardThe Casparian strip… I. is a waxy layer in the walls of the endodermal cells of the root II. promotes apoplastic movement of water and minerals across the endodermis III. provides an opportunity for regulation of mineral uptake by the plantarrow_forward
- The Casparian strip… I. is a waxy layer in the walls of the endodermal cells of the root II. promotes apoplastic movement of water and minerals across the endodermis III. provides an opportunity for regulation of mineral uptake by the plant Select one: a. I, II and III are true b. Only I and II are true c. Only I is true d. Only I and III are true e. Only II and III are truearrow_forward1. Identify the labeled cells, tissues and other associated structures. В A P Q A (region) CI C2 S D T E F V W H X Y J Z K A1 C1 (basic and subtype) L A2 M. N АЗ A4 C2 (term for xylem arms) 2. Discuss which pathway permits the passage of most solutes and water inside the roots? Which pathway allows the entry of most of the water and some of the solutes inside the root tissue? Explain how the Casparian strip creates a barrier for substance moving through this pathway and how it is circumvented. D (tissue composition) E (single layer of cells) L (red cellular coating) H (conducting tissue) G (give rise to lateral roots) O (function) K (conducting cell) J (уре of maturation) M I (conducting cell) (specific cell) F (conducting tissue) N (name of plant specimen )arrow_forwardWhich one of the following statements about root hairs is CORRECT? Select one: a. They are found in the zone of cell elongation and help the root to fix nitrogen. b.They are found in the root cap and help the root sense gravity. c.They are found in the zone of cell division of the root and help anchor the plant in the soil. d.They are found in the root apical meristem and help the root to absorb water. e.They are found in the zone of cell differentiation in the root. Which of the following best describes the route to fruit formation in flowering plants? Select one: a. 1) pollination, 2) double fertilization, 3) embryo develops, 4) ovary matures, 5) ovule matures. b. 1) pollination, 2) germination of pollen, 3) endosperm develops, 4) ovule develops. c. 1) pollination, 2) endosperm develops, 3) embryo develops, 4) ovule matures. d. 1) pollination, 2) fertilization, 3) embryo develops, 4) ovary matures. e.1) pollination, 2) fertilization, 3) germination of pollen, 4) ovule…arrow_forward
- The first formed primary xylemelements are called ___________.A. MetaxylemB. ProtoxylemC. Xylem fibresD. Xylemp arenchymaarrow_forwardMost water moves from soil to vascular cylinder_____ . a. through root hairs c. through root cell walls b. between root cells d. in xylemarrow_forward35. what are plastids containing starch grains that act as gravity senorsa. amyloplastsb. vacuolesc. root hairsd. passage cell36. the region of the differentiation or ____ contains protuberances.a. cortexb. secondary tissuec. root hair zoned. cambiumarrow_forward
- When farmers apply too much fertilizer to the ground, the solute concentration is higher in the soil than it is in the roots. Explain how this would affect plants. And place these structures in the order that water passes through them during transpiration: endodermis, root cortex, root hair, spongy mesophyll, stomata, and xylem. -Thank you!arrow_forward(b) Water absorbed by plant roots travels by different pathways from the root hairs to the xylem. Figure 5 shows these pathways in a plant root. cell A xylem vessel root hair key pathway B Tissue D Tissue E * pathway C Figure 5: Schematic representation of water movement through the tissues of a plant root (PLEASE TURN OVER) Page 6 CONT'D from Page 5 i. Explain how water moves from the root hair to the xylem vessels in the root. ii. Identify cellA, pathway B, pathway C, tissue D and tissue E in Figure 5.arrow_forwardWhich of the following is/are true? I. A measure of how much water is present in comparison with the solute molecules in the same volume of solution known as diffusion gradient II. The region found above the region of cell division can be seen in different young roots because of the presence of numerous root hairs that increase absorption. III. The meristematic region is has cells that elongate several times their original length and push the root tip through the soil. IV. The meristematic region is the growing apex of the rootarrow_forward
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