Which of the following statements best explains the change in herbicide-resistant horseweed populations over time? Individual horseweed plants that are resistant to the herbicide increased over time by surviving and reproducing, and passing their herbicide-resistant genes to their offspring. Horseweed plant populations resistant to the herbicide increased over time by growing in areas where the herbicide is not present, increasing their chance of survival. Numbers of individual horseweed plants remained the same over time, however they reproduced at different rates. Since the herbicide-resistant individuals can C reproduce faster and increase their genes in the population, the population became more resistant over time. Numbers of individual horseweed plants remained the same over time, however they developed genes that make them more resistant to herbicides. As the resistant individuals pass their genes on to other populations, the horseweed plants become more resistant over time.
Which of the following statements best explains the change in herbicide-resistant horseweed populations over time? Individual horseweed plants that are resistant to the herbicide increased over time by surviving and reproducing, and passing their herbicide-resistant genes to their offspring. Horseweed plant populations resistant to the herbicide increased over time by growing in areas where the herbicide is not present, increasing their chance of survival. Numbers of individual horseweed plants remained the same over time, however they reproduced at different rates. Since the herbicide-resistant individuals can C reproduce faster and increase their genes in the population, the population became more resistant over time. Numbers of individual horseweed plants remained the same over time, however they developed genes that make them more resistant to herbicides. As the resistant individuals pass their genes on to other populations, the horseweed plants become more resistant over time.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Horseweed is a species of plant that competes with crops for nutrients and water. Since the 1950s, farmers have tried to control this weed by applying herbicides. There are some
horseweed populations that are resistant to these herbicides. The graph shows the number of identified herbicide-resistant populations of horseweed from 1955 to 2015.
HERBICIDE-RESISTANT HORSEWEED
POPULATIONS OVER TIME
450
400
350-
300-
250
200
150
100
50
0-
1955 1965 1975 1985 1995 2005 2015
Year
Number of Unique
Resistance Cases
Transcribed Image Text:Year
Which of the following statements best explains the change in herbicide-resistant horseweed populations over time?
Individual horseweed plants that are resistant to the herbicide increased over time by surviving and reproducing, and passing their herbicide-resistant genes to their
A
offspring.
B
Horseweed plant populations resistant to the herbicide increased over time by growing in areas where the herbicide is not present, increasing their chance of survival.
Numbers of individual horseweed plants remained the same over time, however they reproduced at different rates. Since the herbicide-resistant individuals can
reproduce faster and increase their genes in the population, the population became more resistant over time.
Numbers of individual horseweed plants remained the same over time, however they developed genes that make them more resistant to herbicides. As the resistant
individuals pass their genes on to other populations, the horseweed plants become more resistant over time.
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