Answered: Compare the ST and CT treatments in…

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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Compare the ST and CT treatments in Figure 4 to the other treatments (T1, T2, T3, and T4). What do the controls show about the experimental treatments? (Choose one.)

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Only F. kuroshium and N. metavorans are pathogenic to the fig trees, and disrupt movement of xylem sap through the plants.

Conductance of xylem sap is not a good measurement of the degree of fig wilt disease in fig saplings.

All of the fungi tested are pathogenic to the fig trees, and disrupt movement of xylem sap through the plants.

F. kuroshium by itself is not pathogenic to fig saplings, C. facicola by itself is pathogenic to fig saplings and also interacts with F. kuroshium to disrupt movement of xylem sap through the fig saplings.

Figure 4. The rate of xylem sap-conduction in each fig sapling tested. T1: F. kuroshium;
T2: N. metavorans; T3: C. ficicola; T4: F. kuroshium + C. ficicola; ST: sterilized toothpicks;
CT: none. The treatment information is shown in Table 1.
100
Rate of xylem sap-conduction (%)
50-
100
100
50-
0
-10 -5 0
31
T1
T2
--2 468
357-9
T3
T4
X
ST
CT
10 15 20 25 30 35 40 -10 -5 0 5 10 15 20 25 30 35 40
Distance from inoculation site (cm)

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