An apple grower notices that several of his apple trees with fungi growing on their trunks have developed necrotic ring spots, while other trees in the orchard that lack fungi appear healthy. What is the most likely conclusion the farmer can make about the virus infecting his apple trees? a. The apple trees were infected by horizontal transmission. b. The fungi carry disease. c. The fungi attract disease-carrying insects. d. The apple trees were infected by vertical transmission.

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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An apple grower notices that several of his apple trees
with fungi growing on their trunks have developed
necrotic ring spots, while other trees in the orchard that
lack fungi appear healthy. What is the most likely
conclusion the farmer can make about the virus
infecting his apple trees?
a. The apple trees were infected by horizontal
transmission.
b. The fungi carry disease.
c. The fungi attract disease-carrying insects.
d. The apple trees were infected by vertical
transmission.

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