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 28, Problem 13SQ
Summary Introduction
Introduction: Phloem vessels present in the vascular tubes are involved in transporting the prepared food (glucose) from leaves to all parts of the plants. Specialized types of elongated and slender tube found in the phloem tube are called as sieve tubes or sieve elements. Sieve tubes are characteristics of flowering plants. Sieve tube transports carbohydrates to different parts of the plant.
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Chapter 28 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 28 - Prob. 1DAACh. 28 - Prob. 2DAACh. 28 - Prob. 3DAACh. 28 - Prob. 4DAACh. 28 - Prob. 1SQCh. 28 - Decomposing organic matter in soil is called...Ch. 28 - Prob. 3SQCh. 28 - Prob. 4SQCh. 28 - Prob. 5SQCh. 28 - Prob. 6SQ
Ch. 28 - Water evaporation from plant parts is called...Ch. 28 - Prob. 8SQCh. 28 - Prob. 9SQCh. 28 - Sieve tubes are part of ______. a. cortex b....Ch. 28 - With stomata closed, a waterproof cuticle ______....Ch. 28 - Prob. 12SQCh. 28 - Prob. 13SQCh. 28 - Prob. 14SQCh. 28 - Prob. 15SQCh. 28 - Nitrogen deficiency stunts plant growth and causes...Ch. 28 - You just returned home from a three-day vacation....Ch. 28 - Prob. 3CTCh. 28 - Prob. 4CTCh. 28 - Prob. 5CT
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- Closed stomata ________. a. limit gas exchange c. prevent photosynthesis b. permit water loss d. absorb lightarrow_forwardWhile gazing into an aquarium, you observe bubbles coming from anaquatic plant left. What are the bubbles?arrow_forwardPhloem is a tissue found in: A. reproductive organs of animals B. plants C. insects D. mammalsarrow_forward
- Movement of phloem sap from a source to a sink(A) occurs through the apoplast of sieve-tube elements.(B) depends ultimately on the activity of proton pumps.(C) depends on tension, or negative pressure potential.(D) results mainly from diffusion.arrow_forwardWhat substances plug wounded sieve-tube elements, thereby preventingthe leakage of phloem sap?a. X protein and callose b. C protein and callose c. P protein and callose d. P protein and sucrose e. none of the abovearrow_forwardGas exchange occurs through microscopic pores formed by two (a) subsidiary cells (b) abscission cells (c) mesophyll cells (d) guard cells (e) stipulesarrow_forward
- Which of the following is/are false regarding the phloem? A. It transports starch from the leaves to the stem. B. It transports sucrose from the leaves to the roots. C. It is located lateral to the xylem in tree stems. D. Unlike the xylem, majority of the cells are living. E. A and D F. B and Carrow_forwardWith stomata closed, a waterproof cuticle______ . a. minimizes water loss through plant surfaces b. permits gas exchange between the plant and the air c. both a and barrow_forwardRadical vascular bundles are those in which: A. xylem is surrounded by phloem B. phloem is surrounded by xylem C. xylem and phloem occur on the same radius D. xylem and phloem occur on the different radiiarrow_forward
- Primary phloem develops from: A. lateral meristem B. protoderm C. extrastelar cambium D. provascular tissuearrow_forwardAll of the tissues of a plant originate froma. epidermal tissue.b. meristem tissue.c. ground tissue.d. vascular tissuearrow_forwardStems and roots, respectively, exhibit a. a positive phototropic response and no phototropic response. b. a negative phototropic response and no phototropic response. c. no phototropic response and a positive phototropic response. d. no phototropic response and a negative phototropic response.arrow_forward
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