Biology: The Unity and Diversity of Life (Looseleaf)
15th Edition
ISBN: 9781337408417
Author: STARR
Publisher: CENGAGE L
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Chapter 45, Problem 3DAA
Testing Biological Control Biological control agents are used to battle red imported fire ants. Researchers have enlisted the help of Thelohania solenopsae, a natural enemy of the ants. This microsporidian (Section 23.4) is a
Are these biological controls useful against imported fire ants? To find out, USDA scientists treated infested areas with either traditional pesticides or pesticides plus biological controls (both flies and the parasite). The scientists left some plots untreated as controls. FIGURE 45.16 shows the results.
FIGURE 45.16 A comparison of two methods of controlling red imported fire ants. The graph shows the numbers of red imported fire ants over a 28-month period. Orange triangles represent untreated control plots. Green circles are plots treated with pesticides alone. Black squares are plots treated with pesticide and biological control agents (parasitoid flies and a microsporidian parasite).
If this study had ended after the first year, would you conclude that biological controls had a major effect?
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om either a 15-day-old
1-old guinea pig.
Data from the Experiment When you have multiple sets of data,
it can be useful to plot them on the same graph for comparison. In the
graph here, each set of dots (of the same color) forms a scatter plot, in
which every data point represents two numerical values, one for each
variable. For each data set, a curve that best fits the points has been
drawn to make it easier to see the trends. (For additional information
about graphs, see the Scientific Skills Review in Appendix F.)
INTERPRET THE DATA
1. First make sure you understand the parts of the graph. (a) Which
variable is the independent variable-the variable controlled by
the researchers? (b) Which variable is the dependent variable-the
variable that depended on the treatment and was measured by the
researchers? (c) What do the red dots represent? (d) The blue dots?
2. From the data points on the graph, construct a table of the data.
Put "Incubation Time (min)" in the left column of the…
Question 1 of 10
Question 1. If you were to engineer some non-
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Chapter 45 Solutions
Biology: The Unity and Diversity of Life (Looseleaf)
Ch. 45 - Testing Biological Control Biological control...Ch. 45 - Testing Biological Control Biological control...Ch. 45 - Testing Biological Control Biological control...Ch. 45 - Prob. 4DAACh. 45 - The type of physical environment in which a...Ch. 45 - Which cannot be a symbiosis? a. mutualism b....Ch. 45 - Prob. 3SQCh. 45 - ______ can lead to resource partitioning. a....Ch. 45 - Prob. 5SQCh. 45 - Lizards that eat flies they catch on the ground...
Ch. 45 - By a currently favoured hypothesis, species...Ch. 45 - With ______, one species evolves to look like...Ch. 45 - Growth of a forest in an abandoned corn field is...Ch. 45 - Prob. 10SQCh. 45 - If you remove a species from a community, the...Ch. 45 - Prob. 12SQCh. 45 - Prob. 13SQCh. 45 - Prob. 14SQCh. 45 - Prob. 15SQCh. 45 - With antibiotic resistance rising, researchers are...Ch. 45 - Flightless birds on islands often have relatives...Ch. 45 - Some attempts to use biological controls prove...
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