BIOLOGY
4th Edition
ISBN: 9781266739606
Author: Hoefnagels
Publisher: MCG
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Chapter 20, Problem 6WIO
Summary Introduction
To explain:
The reasons behind the genes encoding for the chemicals that inhibit bacterial growth are adaptive to
Concept introduction:
All the living organisms have innate systems developed to defend themselves from the diseases and attack by pathogens. The plants have waxy coatings which prevent the entry of pathogens. There are certain fungi which produces antibiotics.
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Some fungi can be viewed as coenocytic organisms that exhibit little differentiation. When differentiation does occur, such as in the formation of reproductive structures, it is preceded by septum formation. Why does this occur?
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Chapter 20 Solutions
BIOLOGY
Ch. 20.1 - Prob. 1MCCh. 20.1 - Prob. 2MCCh. 20.1 - Prob. 3MCCh. 20.1 - Prob. 4MCCh. 20.2 - Prob. 1MCCh. 20.2 - Prob. 2MCCh. 20.3 - Prob. 1MCCh. 20.3 - Prob. 2MCCh. 20.3 - How does the zygospore fit into the zygomycete...Ch. 20.4 - Prob. 1MC
Ch. 20.4 - Prob. 2MCCh. 20.5 - Prob. 1MCCh. 20.5 - Prob. 2MCCh. 20.5 - Prob. 3MCCh. 20.5 - Prob. 4MCCh. 20.6 - Prob. 1MCCh. 20.6 - Prob. 2MCCh. 20.6 - Prob. 3MCCh. 20.6 - Prob. 4MCCh. 20.7 - Prob. 1MCCh. 20.7 - Prob. 2MCCh. 20.7 - Prob. 3MCCh. 20.7 - Prob. 4MCCh. 20.7 - How do scientists use lichens to monitor...Ch. 20.8 - Prob. 1MCCh. 20.8 - How would you design an experiment to determine...Ch. 20 - Prob. 1MCQCh. 20 - Prob. 2MCQCh. 20 - Prob. 3MCQCh. 20 - Prob. 4MCQCh. 20 - Fungi are considered __ because they get their...Ch. 20 - A dikaryoric cell develops into a zygote when a....Ch. 20 - Prob. 7MCQCh. 20 - Prob. 8MCQCh. 20 - Prob. 9MCQCh. 20 - Prob. 10MCQCh. 20 - Prob. 1WIOCh. 20 - Prob. 2WIOCh. 20 - Prob. 3WIOCh. 20 - Prob. 4WIOCh. 20 - Prob. 5WIOCh. 20 - Prob. 6WIOCh. 20 - Review figure 19.5, which shows the alternation of...Ch. 20 - Prob. 8WIOCh. 20 - Prob. 9WIOCh. 20 - Prob. 10WIOCh. 20 - Prob. 11WIOCh. 20 - Prob. 12WIOCh. 20 - Each ascus within an ascomycete fruiting body...Ch. 20 - Prob. 14WIOCh. 20 - Prob. 15WIOCh. 20 - Prob. 16WIOCh. 20 - Some endophytes produce compounds that fight...Ch. 20 - Describe how experiments might show that a....Ch. 20 - Prob. 19WIOCh. 20 - Prob. 20WIOCh. 20 - Prob. 21WIOCh. 20 - Prob. 1PITCh. 20 - Prob. 2PITCh. 20 - Prob. 3PIT
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- The fungus Botrytis cinerea is a pathogen of plants, and causes high losses of strawberry crops around the world. In Europe, most B. cinerea fungi are killed by fungicides (chemicals sprayed on the crops to kill the fungus). However, some B. cinerea are resistant, and continue to live even when exposed to fungicides. If the currently-used fungicides continue to be sprayed on strawberry crops in Europe, what is expected to happen? (Choose one.) a)The strawberries will eventually become larger and more resistant to fungicides. b)The strawberries will form a beneficial association (mutualism) with the B. cinerea, and both will be resistant to the fungicides. c)Strawberry plants will preferentially be colonized by B. cinerea that are not resistant to fungicides. d) The proportion of B. cinerea that are resistant to fungicides will increase in the population over time, and these fungicides will no longer be effective at killing most of these fungi.arrow_forwardIn what ways are fungi economically important?arrow_forwardIn what ways are fungi important in ecosystems?arrow_forward
- You have been asked to consult for a biotech company that is seeking to understand why some fungi can live in very extreme environments, such as the high temperatures inside naturally occurring hot springs. The company has isolated two different fungal species, F. cattoriae and W. gravinius, both of which can grow at temperatures exceeding 95°C. The company has determined the following things about these fungal species (see attached image) By sequencing and examining their genomes, the biotech company hopes to understand why these species can live in extreme environments. However, the company only has the resources to sequence one genome, and would like your input as to which species should be sequenced and whether you believe a shotgun strategy will work in this case.arrow_forwardWorldwide, frog populations are in decline. Several different fungi have been implicated in (thought to be the cause of) decreases in frog numbers. In particular, shrub frogs are especially at risk. You test several different fungi species to see how they affect sample populations of splotched frogs, a close relative of the shrub frog that is not endangered. To do this, you use the different species of fungi to infect populations of splotched frogs and then measure survival rates of these frogs at different frog densities. Frog densities are given in column 1 of the table below. The frog population in column 2 is the control, which was not infected with a fungus. Initial density of frog population (before introduction of Frog survival Frog survival Frog survival Frog survival Frog survival rate rate rate rate rate Control Fungus Fungus Fungus B. grenchius Fungus B. sporifera B. noeltid B. talbuta fungus) Per 1000 m2 10 0.95 0.72 0.83 0.90 0.5 50 0.9 0.64 0.82 0.87 0.35 75 0.88 0.66…arrow_forwardOne unique feature of fungi is the development of an appressorium and a penetration peg. How do the appressorium and penetration peg function during disease development?arrow_forward
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