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Epidemiology of Plant Disease Quiz

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Questions and Answers

What is the significance of a high quantity of inoculum near the host in terms of pathogen factors?

It promotes sexual reproduction

It decreases the chances of overwintering

It increases the chances for initial infections (correct)

It leads to slower reproduction

Which environmental factor is the dominant factor in diseases caused by oomycetes, fungi, bacteria, & nematodes?

Moisture (correct)

Temperature

Air quality

Sunlight exposure

How does temperature affect disease cycles of pathogens?

It promotes the spread of passive dispersal pathogens

It affects the duration and frequency of favorable temperature (correct)

It reduces the chances of pathogen reproduction

It has no impact on disease cycles

What is the mode of spread of pathogens described as 'Active Passive dispersal'?

A combination of active and passive methods Signup and view all the answers

What can be predicted using disease modeling & forecasting?

The probability of pathogen outbreaks Signup and view all the answers

What is the main goal of using epidemiology in plant disease control?

All of the above Signup and view all the answers

Which of the following is NOT a measurement of disease incidence?

Proportion of pathotypes and resistant strains Signup and view all the answers

Which of the following is NOT a factor that contributes to the appearance of vectors in an epidemic?

Disease control measures Signup and view all the answers

How can epidemiology be used to predict plant disease epidemics?

All of the above Signup and view all the answers

What is the primary purpose of measuring disease severity in an epidemic?

To determine the proportion of area or amount of tissue diseased Signup and view all the answers

Which of the following is NOT considered an element of an epidemic?

Time Signup and view all the answers

What is the relationship between the human equation and the disease triangle?

The human equation is a separate component that can affect the three components of the disease triangle. Signup and view all the answers

What is the relationship between the disease triangle and the disease pyramid?

The disease triangle is a specific application of the disease pyramid to plant diseases. Signup and view all the answers

What is the relationship between the age of plants and their susceptibility to disease?

Plants become more resistant to disease as they age. Signup and view all the answers

What was the relationship between the Irish population and food supply in the mid-1800s, as described in the text?

The Irish population was at the limits of the food supply. Signup and view all the answers