Biology: Unity and Div. of Life (Looseleaf)
14th Edition
ISBN: 9781305251311
Author: STARR
Publisher: CENGAGE L
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Chapter 28, Problem 7SQ
Summary Introduction
Introduction: Water is the most crucial factor for a plant to perform its normal cellular functions. Water is absorbed by the roots. The movement of water from the roots to the leaves can be explained using cohesion tension theory of water transport.
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Sugar transport from leaves to roots occurs by_______ . a. a pressure gradient inside sieve tubes b. different solutes at source and sink regions c. the pumping force of xylem vessels d. evaporation, tension, and cohesion
(3)
a.
b.
The characteristics of water molecules to maintain a continuous column of water
is:
a.
Root pressure
b. Transpiration
C.
d. Forces
Cohesion - Addison
The reason for my answer is because :
a. Releasing water as water vapors
b.
A pressure excreted by root through root system
C.
Releasing water from tips of leaves as liquid
d. Interaction among water molecules and adsorption of water molecules to
walls of xylem vessels
. Which of the following is not a typical plant response to oxygen deficit due to flooding? *
A. Aerenchyma formation
B. Hyponastic growth of submerged leaves
C. Stomatal closure
D. Induction of anaerobic stress proteins
Chapter 28 Solutions
Biology: Unity and Div. of Life (Looseleaf)
Ch. 28 - Carbon, hydrogen, and oxygen are _______ for...Ch. 28 - Decomposing organic matter in soil is called...Ch. 28 - A vascular cylinder consists of _______ a....Ch. 28 - Prob. 4SQCh. 28 - The nutrition of some plants is enhanced by a...Ch. 28 - Water evaporation from plant parts is called...Ch. 28 - Prob. 7SQCh. 28 - Prob. 8SQCh. 28 - Sieve tubes are part of ______. a. cortex b....Ch. 28 - With stomata closed, a waterproof cuticle ______...
Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - TCE Uptake by Transgenic Plants Plants used for...Ch. 28 - When guard cells swell, ______ a. transpiration...Ch. 28 - Stomata open in response to light when _______ a....Ch. 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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- Water potential is (a) the formation of a proton gradient across a cell membrane (b) the transport of a watery solution of sugar in phloem (c) the transport of water in both xylem and phloem (d) the removal of sucrose at the sink, causing water to move out of the sieve tubes (e) the free energy of water in a particular situationarrow_forwardThe movement of water out of phloem sap and back into xylem vessels is often associated with which of the following events? active transport of water out of the phloem sap into a source а. b. passive diffusion of phloem sap into a source active transport of sugars out of the phloem sap into a sink C. hydrostatic push (pressure) forcing phloem sap into a sink Od.arrow_forwardWhich of the following statements is/are false? A. Water is actively transported from source cells into companion cells. B. The transport of sucrose into the Osieve tube elements increases water potential in the phloem. C. The transport of water from the xylem into the phloem increases the O pressure which forces the sucrose water mixture down towards the sink. D. Transpiration cause the water to O move up to the leaves through the vessel elements. E. A and B F. B and Carrow_forward
- (4) a. Which one of the following process is responsible for carrying water to the leaves of a tall plant through xylem vessels : a. Transpiration pull b. Root pressure c. b. Absorption through roots Euron The reason for my answer is: a. Due to a force of moving water upward through xylem vessels b. Deficiency of water in the xylem C. Due to a upward pressure exerted by roots d. Removal of water from the leaves and fill that deficiencyarrow_forwardwhich of the following concernig roost is incorrect? a. monocot roots exhibit primary grwoth and secondary growth b. dicots roots are called taproots c. dicots are called perennials because they exhibit secondary growth d. monoct roots form fibrous roots e. secondary growth causes the xylem and phloem to increase in diameter.arrow_forwardLeaf tissue with sunken stomata will have ___ humidity near the stomata and ___ transpiration. Select one: a. increased, decreased b. decreased, increased c. increased, increased d. decreased, decreasedarrow_forward
- What role do cohesion and adhesion play in xylem transport?a. Like transpiration, they create a tension.b. Like root pressure, they create a positive pressure.c. Like sugars, they cause water to enter xylem.d. They create a continuous water column in xylemarrow_forwardPermanent Wilting point occurs at a water concentration when Group of answer choices a. The water attached to the soil particle can’t be pulled off by the plant. b. When the soil is saturated c. All free water has drained from the soil and that remaining is held to the soil particle against gravitational pull. d) All of the abovearrow_forwardDetermine which of the following statements is/are true for root endodermis? A and B B and C B A and C A, B, and C C Aarrow_forward
- In a woody tree with multiple years of growth, where would you look to find the youngest xylem tissues and the youngest phloem tissues in the cross section of a cut tree trunk? immediately inside the cork cambium and immediately outside the vascular cambium, respectively а. b immediately inside and immediately outside the vascular cambium, respectively immediately inside and immediately outside the cork cambium, respectively at the very center of the trunk and immediately outside the cork cambium, respectively d.arrow_forwardChoose the incorrect statement: a. Bundle sheath cells surround the vascular bundles in both eudicots and monocots. b. Phloem sieve elements contain a higher concentration of amino acids than xylem vessels. c. Phloem sieve elements and xylem tracheary elements are similar at maturity because they are both dead. d. Root hairs are the primary cell type that absorbs water in roots.arrow_forwardWhat role do cohesion and adhesion play in xylem transport?a. Like transpiration, they create a tension.b. Like root pressure, they create a positive pressure.c. Like sugars, they cause water to enter xylem.d. They create a continuous water column in xylem.e. All of these are correct.arrow_forward
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