Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 31, Problem 5TYU
Summary Introduction
Introduction:
The stimulus that plants mostly take from the environment is photoperiod. Night length is responsible for controlling the flowering and other responses to photoperiod.
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A long day plant is given a long night, and is interrupted by a light pulse in the middle of the night. Which quality of the light pulse will most likely prevent flowering?
Select one:
a.
UV light
b.
green light
c.
red light
d.
far-red light
What is the tropic response called when a plant grows around an external object like a stake or pole?
A. thigmotropism
B. Gravitropism
C. Phototropism
Find out the incorrect one for vernalisation.
a.Stimulus of vernalisation is perceived by embryo
b.Prevents early reproductive development
c.Helps to grow more than one crop in a year
d.Can help to keep plant in reproductive stage for very long time
Chapter 31 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 31.1 - Prob. 1CCCh. 31.1 - WHAT IF? If a plant has the double mutation ctr...Ch. 31.1 - Prob. 3CCCh. 31.2 - If an enzyme in field-grown soybean leaves is most...Ch. 31.2 - WHAT IF? If a plant flowers in a controlled...Ch. 31.2 - MAKE CONNECTIONS Plants detect the quality of...Ch. 31.3 - Prob. 1CCCh. 31.3 - Prob. 2CCCh. 31.3 - Prob. 3CCCh. 31.4 - Prob. 1CC
Ch. 31.4 - Chewing insects mechanically damage plants and...Ch. 31.4 - Prob. 3CCCh. 31 - The hormone that helps plants respond to drought...Ch. 31 - Prob. 2TYUCh. 31 - Prob. 3TYUCh. 31 - Prob. 4TYUCh. 31 - Prob. 5TYUCh. 31 - Prob. 6TYUCh. 31 - DRAW IT Indicate the response of Arabidopsis to...Ch. 31 - Prob. 8TYUCh. 31 - FOCUS ON EVOLUTION As a general rule,...Ch. 31 - FOCUS ON INTERACTIONS In a short essay (100-150...Ch. 31 - Prob. 11TYU
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- The pollen lands on which part of the flower? a. stigma b. style c. ovule d. integumentarrow_forwardAuxin causes the bending of shoot toward light by?A. Causing cells to shrink on the dark side of the shootB. Causing cells to shrink on the lighted side of the shootC. Inhibiting growth on the dark side of the shootD. Stimulating growth on the lighted side of the shootE. Stimulating growth on the dark side of the shootarrow_forwardPlant development is influenced by: A. quality of light only B. quality and quantity of light C. quality and duration of light D. quality, quantity and duration of lightarrow_forward
- The drawing shows a plant that reproduces vegetatively. Use the drawing in answering the following questions: 1. Predict what will happen before shoots A, B, and C becomes independent plants. 2. Infer what will happen to shoots D and E. 3. How might a gardener assist this process.arrow_forwardSuggest two reasons why gravitropism is important for plants.arrow_forwardA decrease in the level of which hormone releases seeds from dormancy? a. abscisic acid b. cytokinin c. ethylene d. gibberellic acidarrow_forward
- Owners and managers of plant nurseries have to plan lighting schedules lor a long-day plant that will flower in February. What lighting periods will be most effective? What color of light should be chosen?arrow_forwardWhich structure is involved in the transport of gibberlins through out the plant? A. Cork cambium B. Guard cells C. Vascular tissue D. Apical meristemarrow_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_forward
- Approximately how much chlorophyll was present in the moderate-light plants after 24 hours? A. about 200 micrograms/g B. about 225 micrograms/g C. about 300 micrograms/g D. about 400 micrograms/garrow_forwardIf you exposed seeds to a series of red light versus far-red light treatments, which of the following exposure treatments would result in seed germination? a. Red; far-red b. Far-red; red c. Red; far-red; red; far-red; red; far-red; red; far-red d. Both a and c are correct.arrow_forwardexplain answerarrow_forward
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