BIOLOGY: CONCEPTS&INVEST. (LL)
5th Edition
ISBN: 9781264706983
Author: Hoefnagels
Publisher: MCG
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Question
Chapter 23, Problem 3MCQ
Summary Introduction
Introduction:
Stomata are the tiny pore structures found on the leaves of a plant. They are responsible for the gaseous exchange between the leaf and atmosphere. Stomata also play an important role during transpiration and prevent the excess water loss by their opening and closure.
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The formation of an air bubble in the xylem is called
a. agitation.
b. cohesion.
c. adhesion.
d. cavitation.
Stomata are usually opena. at night, when the plant requires a supply of oxygen.b. during the day, when the plant requires a supply of carbondioxide.c. day or night if there is excess water in the soil.d. during the day, when transpiration occurs.e. Both b and d are correct.
When absorption of water by the roots fails to keep up with the rate of transpiration, gain in turgor occurs, and the stomata close.
A. Agree, because the transpiration occurs faster than root absorption.
D. Disagree, because the condition should be when root absorption is able to keep up with transpiration, then stomates close.
B. Disagree, because under this condition, the turgor pressure decreases and the stomates close.
C. Agree, because increase in turgor pressure under this condition, closes the stomates.
Chapter 23 Solutions
BIOLOGY: CONCEPTS&INVEST. (LL)
Ch. 23.1 - How do plants acquire C, H, O, N, and P?Ch. 23.1 - Prob. 2MCCh. 23.1 - Prob. 3MCCh. 23.2 - Prob. 1MCCh. 23.2 - Prob. 2MCCh. 23.2 - Prob. 3MCCh. 23.3 - Prob. 1MCCh. 23.3 - Prob. 2MCCh. 23.3 - Prob. 3MCCh. 23.4 - Prob. 1MC
Ch. 23.4 - Prob. 2MCCh. 23.5 - Prob. 1MCCh. 23.5 - Prob. 2MCCh. 23.5 - Prob. 3MCCh. 23 - Prob. 1MCQCh. 23 - Prob. 2MCQCh. 23 - Prob. 3MCQCh. 23 - Prob. 4MCQCh. 23 - Prob. 5MCQCh. 23 - Prob. 6MCQCh. 23 - Prob. 7MCQCh. 23 - Explain the relationship between transpiration and...Ch. 23 - Prob. 2WIOCh. 23 - Prob. 3WIOCh. 23 - Prob. 4WIOCh. 23 - Prob. 5WIOCh. 23 - Prob. 6WIOCh. 23 - Prob. 7WIOCh. 23 - Prob. 8WIOCh. 23 - Prob. 9WIOCh. 23 - Prob. 10WIOCh. 23 - Prob. 11WIOCh. 23 - Prob. 12WIOCh. 23 - Prob. 13WIOCh. 23 - Prob. 1PITCh. 23 - Prob. 2PITCh. 23 - Prob. 3PIT
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- Plant bends towards the source of light on account of the movement of curvature known as: A. geotropism B. thigmotropism C. chemotropism D. phototropismarrow_forwardWhich 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_forwardThe structure of the C4 leaf shows a. how mesophyll cells hug the epidermis of the leaf. hug the bundle sheath cells. b. C. they are spikey. how there are stomata on the underside of the leaf. they store water. TOU O b Oc O e darrow_forward
- Which of the following plant structures is necessary for transpiration to occur? a. Sieve tubes c. Fruits b. Leaves d. Rootsarrow_forwardIn response to high light intensity, which of the following is most likely expected in a shade plant on an anatomical level: Select one: a. decreased tocopherol content b. decreased vitamin C c. decreased starch d. decreased carotenoids e. leaves will reposition away from the sunarrow_forward. 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 proteinsarrow_forward
- In 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_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(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_forward
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