Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 37, Problem 10TY
Summary Introduction
Introduction: An organism’s response to an external or an internal stimulus is known as its behavior. Herbivores and pathogens are likely to attack plants and the plants use structural features like outer bark, cuticles, and epidermal trichomes to protect themselves from herbivorous attacks.
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Which of the following is the function of cytokinin?
A. activation of defense response from biotrophic and hemi-biotrophic pathogens
B. structurally related to animal steroid hormones for growth and development
C. long distance (root-to-shoot) signals for nitrogen assimilation
D. defense from necrotrophic pathogens and herbivore insects
Some plants are recognized by fungal pathogens on the basis of their stomatal pores. Which of the following would provide these plants immunity from fungal infection?
a. Removing all of the stomata from the plant
b. Changing the spacing of stomatal pores in these plants
c. Reinforcing the cell wall in the guard cells of stomatal pores
d. Increasing the number of trichomes on the surfaces
Which of the following may stimulate the growth of the roots in plant cuttings?
Select one:
a. The use of auxins.
b. A decrease in soil minerals.
c. A decrease in enzymes.
d. The use of endocrine secretions.
Chapter 37 Solutions
Biology
Ch. 37.1 - Prob. 1CSCh. 37.2 - Prob. 1CCCh. 37.2 - Prob. 1EQCh. 37.2 - Prob. 2EQCh. 37.2 - Prob. 2CCCh. 37.2 - Prob. 3CCCh. 37.3 - Prob. 1CCCh. 37.3 - What would happen if you gave flowering plants a...Ch. 37.3 - Prob. 3CCCh. 37.3 - Prob. 4CC
Ch. 37 - Prob. 1TYCh. 37 - Prob. 2TYCh. 37 - Prob. 3TYCh. 37 - Prob. 4TYCh. 37 - Prob. 5TYCh. 37 - Prob. 6TYCh. 37 - Thigmotropism is a plant response to a. light. b....Ch. 37 - Which response is an adaptation to flooding? a....Ch. 37 - Prob. 9TYCh. 37 - Prob. 10TYCh. 37 - Prob. 1CQCh. 37 - Why do plants produce so many types of resistance...Ch. 37 - Prob. 3CQCh. 37 - Prob. 1COQCh. 37 - Prob. 2COQ
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- What is the term for a plant response that changes immediately as the environment changes? * A. Triggered response B. Modulated response C. Direct response D. Homeostasisarrow_forwardWhich of the following best describes evidence of a hypersensitive response? Select one: a. The bending of the coleoptile towards light. b. The growth of roots down and shoots up. c. When cells around an infection site die, depriving the pathogen of nutrients and preventing it from spreading. d. When plants elongate in response to being shaded. e. When stomata close despite plenty of CO 2 and water.arrow_forwardPhytochrome is a plant pigment protein that: a. mediates plant infection b. promotes plant growth c. mediates morphological changes in response to red and far-red light d. inhibits plant growtharrow_forward
- Which of the following is an effective plant defense against insect herbivory? Select one: a. Hypersensitive response b. Gene-for-gene resistance c. Salicylic acid d. Protease inhibitors e. Resistance genesarrow_forwardWhich hormone can regulate guard cells? Select one: a. ethylene b. abscisic acid c. gibberellin d. cytokinin e. auxinarrow_forwardRoot cells exhibit positive gravitropism with the help ofa. auxin in the root cells.b. amyloplasts in root cells.c. exposure to sunlight.d. a nearby substrate.arrow_forward
- Distinguish between a hypersensitive response and systemicacquired resistance in plantsarrow_forwardWhich combination of hormones is best for promotingthe formation of lateral roots from pericycle?a. A high auxin level and low cytokinin levelb. A low auxin level and high cytokinin levelc. A high level of auxin and cytokininarrow_forwardJack and Jill are curious about the factors that affect plant growth. They perform several experiments using pea plants. (a) Identify one variable (other than water and sunlight) that could be tested. (b) Write a hypothesis using this variable. (c) Design an experiment to test this variable.arrow_forward
- Which of the following is NOT a function of the stem in a plant? Which of the following is NOT a function of the stem in a plant? A) absorb water B) store nutrients C) produce new plant cells D) support flowers and leavesarrow_forwardThe stress hormone that helps plants respond to drought is (a) auxin (b) gibberellin (c) cytokinin (d) ethylene (e) abscisic acidarrow_forward1. A) Describe the three steps (Reception, Transduction, Response) of de-etiolation (greening response) signal transduction in plants. B) Describe a signal transduction (give the stimulus and response) that may occur in humans.arrow_forward
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